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How to use track_events method in Playwright Python

Best Python code snippet using playwright-python

exportmidi.py

Source:exportmidi.py

1#!/usr/bin/env python2import logging3import numpy as np4from collections import defaultdict, OrderedDict5from mido import MidiFile, MidiTrack, Message, MetaMessage6import partitura.score as score7from partitura.utils import partition8__all__ = ["save_score_midi", "save_performance_midi"]9LOGGER = logging.getLogger(__name__)10def get_partgroup(part):11    parent = part12    while parent.parent:13        parent = parent.parent14    return parent15def map_to_track_channel(note_keys, mode):16    ch_helper = {}17    tr_helper = {}18    track = {}19    channel = {}20    for (pg, p, v) in note_keys:21        if mode == 0:22            trk = tr_helper.setdefault(p, len(tr_helper))23            ch1 = ch_helper.setdefault(p, {})24            ch2 = ch1.setdefault(v, len(ch1) + 1)25            track[(pg, p, v)] = trk26            channel[(pg, p, v)] = ch227        elif mode == 1:28            trk = tr_helper.setdefault(pg, len(tr_helper))29            ch1 = ch_helper.setdefault(pg, {})30            ch2 = ch1.setdefault(p, len(ch1) + 1)31            track[(pg, p, v)] = trk32            channel[(pg, p, v)] = ch233        elif mode == 2:34            track[(pg, p, v)] = 035            ch = ch_helper.setdefault(p, len(ch_helper) + 1)36            channel[(pg, p, v)] = ch37        elif mode == 3:38            trk = tr_helper.setdefault(p, len(tr_helper))39            track[(pg, p, v)] = trk40            channel[(pg, p, v)] = 141        elif mode == 4:42            track[(pg, p, v)] = 043            channel[(pg, p, v)] = 144        elif mode == 5:45            trk = tr_helper.setdefault((p, v), len(tr_helper))46            track[(pg, p, v)] = trk47            channel[(pg, p, v)] = 148        else:49            raise Exception("unsupported part/voice assign mode {}".format(mode))50    result = dict((k, (track.get(k, 0), channel.get(k, 1))) for k in note_keys)51    # for (pg, p, voice), v in result.items():52    #     pgn = pg.group_name if hasattr(pg, 'group_name') else pg.id53    #     print(pgn, p.id, voice)54    #     print(v)55    #     print()56    return result57def get_ppq(parts):58    ppqs = np.concatenate(59        [part.quarter_durations()[:, 1] for part in score.iter_parts(parts)]60    )61    ppq = np.lcm.reduce(ppqs)62    return ppq63def save_performance_midi(64    performed_part, out, mpq=500000, ppq=480, default_velocity=6465):66    """Save a :class:`~partitura.performance.PerformedPart` instance as a67    MIDI file.68    Parameters69    ----------70    performed_part : :class:`~partitura.performance.PerformedPart`71        The performed part to save72    out : str or file-like object73        Either a filename or a file-like object to write the MIDI data74        to.75    mpq : int, optional76        Microseconds per quarter note. This is known in MIDI parlance77        as the "tempo" value. Defaults to 500000 (i.e. 120 BPM).78    ppq : int, optional79        Parts per quarter, also known as ticks per beat. Defaults to80        480.81    default_velocity : int, optional82        A default velocity value (between 0 and 127) to be used for83        notes without a specified velocity. Defaults to 64.84    """85    track_events = defaultdict(lambda: defaultdict(list))86    for c in performed_part.controls:87        track = c.get("track", 0)88        ch = c.get("channel", 1)89        t = int(np.round(10 ** 6 * ppq * c["time"] / mpq))90        track_events[track][t].append(91            Message("control_change", control=c["number"], value=c["value"], channel=ch)92        )93    for n in performed_part.notes:94        track = n.get("track", 0)95        ch = n.get("channel", 1)96        t_on = int(np.round(10 ** 6 * ppq * n["note_on"] / mpq))97        t_off = int(np.round(10 ** 6 * ppq * n["note_off"] / mpq))98        vel = n.get("velocity", default_velocity)99        track_events[track][t_on].append(100            Message("note_on", note=n["midi_pitch"], velocity=vel, channel=ch)101        )102        track_events[track][t_off].append(103            Message("note_off", note=n["midi_pitch"], velocity=0, channel=ch)104        )105    for p in performed_part.programs:106        track = p.get("track", 0)107        ch = p.get("channel", 1)108        t = int(np.round(10 ** 6 * ppq * p["time"] / mpq))109        track_events[track][t].append(110            Message("program_change", program=int(p["program"]), channel=ch)111        )112    if len(performed_part.programs) == 0:113        # Add default program (to each track/channel)114        channels_and_tracks = np.array(115            list(116                set(117                    [118                        (c.get("channel", 1), c.get("track", 0))119                        for c in performed_part.controls120                    ]121                    + [122                        (n.get("channel", 1), n.get("track", 0))123                        for n in performed_part.notes124                    ]125                )126            ),127            dtype=int,128        )129        timepoints = []130        for tr in track_events.keys():131            timepoints += list(track_events[tr].keys())132        timepoints = list(set(timepoints))133        for tr in np.unique(channels_and_tracks[:, 1]):134            channel_idxs = np.where(channels_and_tracks[:, 1] == tr)[0]135            track_channels = np.unique(channels_and_tracks[channel_idxs, 0])136            for ch in track_channels:137                track_events[tr][min(timepoints)].append(138                    Message("program_change", program=0, channel=ch)139                )140    midi_type = 0 if len(track_events) == 1 else 1141    mf = MidiFile(type=midi_type, ticks_per_beat=ppq)142    for j, i in enumerate(sorted(track_events.keys())):143        track = MidiTrack()144        mf.tracks.append(track)145        if j == 0:146            track.append(MetaMessage("set_tempo", tempo=mpq, time=0))147        t = 0148        for t_msg in sorted(track_events[i].keys()):149            t_delta = t_msg - t150            for msg in track_events[i][t_msg]:151                track.append(msg.copy(time=t_delta))152                t_delta = 0153            t = t_msg154    if out:155        if hasattr(out, "write"):156            mf.save(file=out)157        else:158            mf.save(out)159def save_score_midi(160    parts, out, part_voice_assign_mode=0, velocity=64, anacrusis_behavior="shift"161):162    """Write data from Part objects to a MIDI file163    Parameters164    ----------165    parts : Part, PartGroup or list of these166        The musical score to be saved.167    out : str or file-like object168        Either a filename or a file-like object to write the MIDI data169        to.170    part_voice_assign_mode : {0, 1, 2, 3, 4, 5}, optional171        This keyword controls how part and voice information is172        associated to track and channel information in the MIDI file.173        The semantics of the modes is as follows:174        0175            Write one track for each Part, with channels assigned by176            voices177        1178            Write one track for each PartGroup, with channels assigned by179            Parts (voice info is lost) (There can be multiple levels of180            partgroups, I suggest using the highest level of181            partgroup/part) [note: this will e.g. lead to all strings into182            the same track] Each part not in a PartGroup will be assigned183            its own track184        2185            Write a single track with channels assigned by Part (voice186            info is lost)187        3188            Write one track per Part, and a single channel for all voices189            (voice info is lost)190        4191            Write a single track with a single channel (Part and voice192            info is lost)193        5194            Return one track per <Part, voice> combination, each track195            having a single channel.196        The default mode is 0.197    velocity : int, optional198        Default velocity for all MIDI notes. Defaults to 64.199    anacrusis_behavior : {"shift", "pad_bar"}, optional200        Strategy to deal with anacrusis. If "shift", all201        time points are shifted by the anacrusis (i.e., the first202        note starts at 0). If "pad_bar", the "incomplete" bar  of203        the anacrusis is padded with silence. Defaults to 'shift'.204    """205    ppq = get_ppq(parts)206    events = defaultdict(lambda: defaultdict(list))207    meta_events = defaultdict(lambda: defaultdict(list))208    event_keys = OrderedDict()209    tempos = {}210    quarter_maps = [part.quarter_map for part in score.iter_parts(parts)]211    first_time_point = min(qm(0) for qm in quarter_maps)212    ftp = 0213    # Deal with anacrusis214    if first_time_point < 0:215        if anacrusis_behavior == "shift":216            ftp = first_time_point217        elif anacrusis_behavior == "pad_bar":218            time_signatures = []219            for qm, part in zip(quarter_maps, score.iter_parts(parts)):220                ts_beats, ts_beat_type = part.time_signature_map(0)221                time_signatures.append((ts_beats, ts_beat_type, qm(0)))222            # sort ts according to time223            time_signatures.sort(key=lambda x: x[2])224            ftp = -time_signatures[0][0] / (time_signatures[0][1] / 4)225        else:226            raise Exception(227                'Invalid anacrusis_behavior value, must be one of ("shift", "pad_bar")'228            )229    for qm, part in zip(quarter_maps, score.iter_parts(parts)):230        pg = get_partgroup(part)231        notes = part.notes_tied232        def to_ppq(t):233            # convert div times to new ppq234            return int(ppq * (qm(t) - ftp))235        for tp in part.iter_all(score.Tempo):236            tempos[to_ppq(tp.start.t)] = MetaMessage(237                "set_tempo", tempo=tp.microseconds_per_quarter238            )239        for ts in part.iter_all(score.TimeSignature):240            meta_events[part][to_ppq(ts.start.t)].append(241                MetaMessage(242                    "time_signature", numerator=ts.beats, denominator=ts.beat_type243                )244            )245        for ks in part.iter_all(score.KeySignature):246            meta_events[part][to_ppq(ks.start.t)].append(247                MetaMessage("key_signature", key=ks.name)248            )249        for note in notes:250            # key is a tuple (part_group, part, voice) that will be251            # converted into a (track, channel) pair.252            key = (pg, part, note.voice)253            events[key][to_ppq(note.start.t)].append(254                Message("note_on", note=note.midi_pitch)255            )256            events[key][to_ppq(note.start.t + note.duration_tied)].append(257                Message("note_off", note=note.midi_pitch)258            )259            event_keys[key] = True260    tr_ch_map = map_to_track_channel(list(event_keys.keys()), part_voice_assign_mode)261    # replace original event keys (partgroup, part, voice) by (track, ch) keys:262    for key in list(events.keys()):263        evs_by_time = events[key]264        del events[key]265        tr, ch = tr_ch_map[key]266        for t, evs in evs_by_time.items():267            events[tr][t].extend((ev.copy(channel=ch) for ev in evs))268    # figure out in which tracks to replicate the time/key signatures of each part269    part_track_map = partition(lambda x: x[0][1], tr_ch_map.items())270    for part, rest in part_track_map.items():271        part_track_map[part] = set(x[1][0] for x in rest)272    # add the time/key sigs to their corresponding tracks273    for part, m_events in meta_events.items():274        tracks = part_track_map[part]275        for tr in tracks:276            for t, me in m_events.items():277                events[tr][t] = me + events[tr][t]278    n_tracks = max(tr for tr, _ in tr_ch_map.values()) + 1279    tracks = [MidiTrack() for _ in range(n_tracks)]280    # tempo events are handled differently from key/time sigs because the have a281    # global effect. Instead of adding to each relevant track, like the key/time282    # sig events, we add them only to the first track283    for t, tp in tempos.items():284        events[0][t].insert(0, tp)285    for tr, events_by_time in events.items():286        t_prev = 0287        for t in sorted(events_by_time.keys()):288            evs = events_by_time[t]289            delta = t - t_prev290            for ev in evs:291                tracks[tr].append(ev.copy(time=delta))292                delta = 0293            t_prev = t294    midi_type = 0 if n_tracks == 1 else 1295    mf = MidiFile(type=midi_type, ticks_per_beat=ppq)296    for track in tracks:297        mf.tracks.append(track)298    if out:299        if hasattr(out, "write"):300            mf.save(file=out)301        else:...

main.py

Source:main.py

1import os2import time3import importlib4import datetime as dt5from tqdm import tqdm6from utils import file_write, log_end_epoch, INF, valid_hyper_params7from data_path_constants import get_log_file_path, get_model_file_path8# NOTE: No global-level torch imports as the GPU-ID is set through code9def train(model, criterion, optimizer, reader, hyper_params, forgetting_events, track_events):10    import torch11    model.train()12    13    # Initializing metrics since we will calculate MSE on the train set on the fly14    metrics = {}15    16    # Initializations17    at = 018    19    # Train for one epoch, batch-by-batch20    loop = tqdm(reader)21    for data, y in loop:22        # Empty the gradients23        model.zero_grad()24        optimizer.zero_grad()25    26        # Forward pass27        output = model(data)28        # Compute per-interaction loss29        loss = criterion(output, y, return_mean = False)30        criterion.anneal(1.0 / float(len(reader) * hyper_params['epochs']))31        # loop.set_description("Loss: {}".format(round(float(loss), 4)))32        33        # Track forgetting events34        if track_events:35            with torch.no_grad():36                if hyper_params['task'] == 'explicit': forgetting_events[at : at+data[0].shape[0]] += loss.data37                else:38                    pos_output, neg_output = output39                    pos_output = pos_output.repeat(1, neg_output.shape[1])40                    num_incorrect = torch.sum((neg_output > pos_output).float(), -1)41                    forgetting_events[at : at+data[0].shape[0]] += num_incorrect.data42                    43                at += data[0].shape[0]44        # Backward pass45        loss = torch.mean(loss)46        loss.backward()47        optimizer.step()48    return metrics, forgetting_events49def train_complete(hyper_params, train_reader, val_reader, model, model_class, track_events):50    import torch51    from loss import CustomLoss52    from eval import evaluate53    from torch_utils import is_cuda_available54    criterion = CustomLoss(hyper_params)55    optimizer = torch.optim.Adam(56        model.parameters(), lr=hyper_params['lr'], betas=(0.9, 0.98),57        weight_decay=hyper_params['weight_decay']58    )59    file_write(hyper_params['log_file'], str(model))60    file_write(hyper_params['log_file'], "\nModel Built!\nStarting Training...\n")61    try:62        best_MSE = float(INF)63        best_AUC = -float(INF)64        best_HR = -float(INF)65        decreasing_streak = 066        forgetting_events = None67        if track_events: 68            forgetting_events = torch.zeros(train_reader.num_interactions).float()69            if is_cuda_available: forgetting_events = forgetting_events.cuda()70        for epoch in range(1, hyper_params['epochs'] + 1):71            epoch_start_time = time.time()72            73            # Training for one epoch74            metrics, local_forgetted_count = train(75                model, criterion, optimizer, train_reader, hyper_params, 76                forgetting_events, track_events77            )78            # Calulating the metrics on the validation set79            if (epoch % hyper_params['validate_every'] == 0) or (epoch == 1):80                metrics = evaluate(model, criterion, val_reader, hyper_params, train_reader.item_propensity)81                metrics['dataset'] = hyper_params['dataset']82                decreasing_streak += 183                # Save best model on validation set84                if hyper_params['task'] == 'explicit' and metrics['MSE'] < best_MSE:85                    print("Saving model...")86                    torch.save(model.state_dict(), hyper_params['model_path'])87                    decreasing_streak, best_MSE = 0, metrics['MSE']88                elif hyper_params['task'] != 'explicit' and metrics['AUC'] > best_AUC:89                    print("Saving model...")90                    torch.save(model.state_dict(), hyper_params['model_path'])91                    decreasing_streak, best_AUC = 0, metrics['AUC']92                elif hyper_params['task'] != 'explicit' and metrics['HR@10'] > best_HR:93                    print("Saving model...")94                    torch.save(model.state_dict(), hyper_params['model_path'])95                    decreasing_streak, best_HR = 0, metrics['HR@10']96            97            log_end_epoch(hyper_params, metrics, epoch, time.time() - epoch_start_time, metrics_on = '(VAL)')98            # Check if need to early-stop99            if 'early_stop' in hyper_params and decreasing_streak >= hyper_params['early_stop']:100                file_write(hyper_params['log_file'], "Early stopping..")101                break102            103    except KeyboardInterrupt: print('Exiting from training early')104    # Load best model and return it for evaluation on test-set105    if os.path.exists(hyper_params['model_path']):106        model = model_class(hyper_params)107        if is_cuda_available: model = model.cuda()108        model.load_state_dict(torch.load(hyper_params['model_path']))109    110    model.eval()111    if track_events: forgetting_events = forgetting_events.cpu().numpy() / float(hyper_params['epochs'])112    return model, forgetting_events113def train_neumf(hyper_params, train_reader, val_reader, track_events):114    from pytorch_models.NeuMF import GMF, MLP, NeuMF115    from torch_utils import is_cuda_available, xavier_init116    initial_path = hyper_params['model_path']117    # Pre-Training the GMF Model118    hyper_params['model_path'] = initial_path[:-3] + "_gmf.pt"119    gmf_model = GMF(hyper_params)120    if is_cuda_available: gmf_model = gmf_model.cuda()121    xavier_init(gmf_model)122    gmf_model, _ = train_complete(hyper_params, train_reader, val_reader, gmf_model, GMF, track_events)123    # Pre-Training the MLP Model124    hyper_params['model_path'] = initial_path[:-3] + "_mlp.pt"125    mlp_model = MLP(hyper_params)126    if is_cuda_available: mlp_model = mlp_model.cuda()127    xavier_init(mlp_model)128    mlp_model, _ = train_complete(hyper_params, train_reader, val_reader, mlp_model, MLP, track_events)129    # Training the final NeuMF Model130    hyper_params['model_path'] = initial_path131    model = NeuMF(hyper_params)132    if is_cuda_available: model = model.cuda()133    model.init(gmf_model, mlp_model)134    model, forgetting_events = train_complete(hyper_params, train_reader, val_reader, model, NeuMF, track_events)135    # Remove GMF and MLP models136    mlp_path = initial_path[:-3] + "_mlp.pt"137    gmf_path = initial_path[:-3] + "_gmf.pt"138    os.remove(mlp_path) ; os.remove(gmf_path)139    140    return model, forgetting_events141def main_pytorch(hyper_params, track_events = False, eval_full = True):142    from load_data import load_data143    from eval import evaluate144    145    from torch_utils import is_cuda_available, xavier_init, get_model_class146    from loss import CustomLoss147    if not valid_hyper_params(hyper_params): 148        print("Invalid task combination specified, exiting.")149        return150    # Load the data readers151    train_reader, test_reader, val_reader, hyper_params = load_data(hyper_params, track_events = track_events)152    file_write(hyper_params['log_file'], "\n\nSimulation run on: " + str(dt.datetime.now()) + "\n\n")153    file_write(hyper_params['log_file'], "Data reading complete!")154    file_write(hyper_params['log_file'], "Number of train batches: {:4d}".format(len(train_reader)))155    file_write(hyper_params['log_file'], "Number of validation batches: {:4d}".format(len(val_reader)))156    file_write(hyper_params['log_file'], "Number of test batches: {:4d}".format(len(test_reader)))157    # Initialize & train the model158    start_time = time.time()159    if hyper_params['model_type'] == 'NeuMF': 160        model, forgetting_events = train_neumf(hyper_params, train_reader, val_reader, track_events)161    else:162        model = get_model_class(hyper_params)(hyper_params)163        if is_cuda_available: model = model.cuda()164        xavier_init(model)165        model, forgetting_events = train_complete(166            hyper_params, train_reader, val_reader, model, get_model_class(hyper_params), track_events167        )168    metrics = {}169    if eval_full:170        # Calculating MSE on test-set171        criterion = CustomLoss(hyper_params)172        metrics = evaluate(model, criterion, test_reader, hyper_params, train_reader.item_propensity, test = True)173        log_end_epoch(hyper_params, metrics, 'final', time.time() - start_time, metrics_on = '(TEST)')174    # We have no space left for storing the models175    os.remove(hyper_params['model_path'])176    del model, train_reader, test_reader, val_reader177    return metrics, forgetting_events178def main_pop_rec(hyper_params):179    from load_data import load_data180    from eval import evaluate181    from loss import CustomLoss182    from pytorch_models.pop_rec import PopRec183    # Load the data readers184    train_reader, test_reader, val_reader, hyper_params = load_data(hyper_params)185    file_write(hyper_params['log_file'], "\n\nSimulation run on: " + str(dt.datetime.now()) + "\n\n")186    file_write(hyper_params['log_file'], "Data reading complete!")187    file_write(hyper_params['log_file'], "Number of test batches: {:4d}\n\n".format(len(test_reader)))188    # Make the model189    start_time = time.time()190    model = PopRec(hyper_params, train_reader.get_item_count_map())191    # Calculating MSE on test-set192    criterion = CustomLoss(hyper_params)193    metrics = evaluate(model, criterion, test_reader, hyper_params, train_reader.item_propensity, test = True)194    log_end_epoch(hyper_params, metrics, 'final', time.time() - start_time, metrics_on = '(TEST)')195    196    del model, train_reader, test_reader, val_reader197    return metrics, None198def main(hyper_params, gpu_id = None): 199    if not valid_hyper_params(hyper_params): 200        print("Invalid task combination specified, exiting.")201        return202    # Setting GPU ID for running entire code ## Very Very Imp.203    if gpu_id is not None: 204        os.environ["CUDA_VISIBLE_DEVICES"] = str(gpu_id)205        # torch.cuda.set_device(int(gpu_id))206        # torch.cuda.empty_cache()207    # Set dataset specific hyper-params208    hyper_params.update(209        importlib.import_module('data_hyperparams.{}'.format(hyper_params['dataset'])).hyper_params210    )211    # Learning rate is "highly" dataset AND model specific212    if 'lr' not in hyper_params:213        if hyper_params['model_type'] == 'SASRec': hyper_params['lr'] = 0.006214        elif hyper_params['model_type'] == 'SVAE': hyper_params['lr'] = 0.02215        elif hyper_params['model_type'] == 'MVAE': hyper_params['lr'] = 0.01216        else: hyper_params['lr'] = 0.008217    hyper_params['log_file'] = get_log_file_path(hyper_params)218    hyper_params['model_path'] = get_model_file_path(hyper_params)219    if hyper_params['model_type'] == 'pop_rec': main_pop_rec(hyper_params)220    else: main_pytorch(hyper_params)221    # torch.cuda.empty_cache()222if __name__ == '__main__':223    from hyper_params import hyper_params...

ml64.py

Source:ml64.py

1from chiptunesak.base import *2from chiptunesak import chirp, mchirp3from chiptunesak import constants4'''5This file contains functions required to export MidiSimple songs to ML64 format.6This is the format created by Stirring Dragon Games for music content contributed7by those who backed the Unknown Realm kickstarter at the bard tier.8A few years ago, Knapp and Youd wrote a midi->ml64 tool in Python 2 for the Unknown9Realm developers.  ChiptuneSAK (in Python 3) replaces that tool.10Note:  We haven't seen the game or any source code for it.  We know they're cranking11away at it, but have no details as to when the game will be released.  Please12direct all questions regarding Unknown Realm to Stirring Dragon Games13(https://stirringdragon.games)14'''15ml64_durations = {16    Fraction(6, 1): '1d', Fraction(4, 1): '1', Fraction(3, 1): '2d', Fraction(2, 1): '2',17    Fraction(3, 2): '4d', Fraction(1, 1): '4', Fraction(3, 4): '8d', Fraction(1, 2): '8',18    Fraction(1, 4): '16'19}20def pitch_to_ml64_note_name(note_num, octave_offset=0):21    """22    Gets note name for a given MIDI pitch23    """24    if not 0 <= note_num <= 127:25        raise ChiptuneSAKValueError("Illegal note number %d" % note_num)26    octave_num = ((note_num - constants.C0_MIDI_NUM) // 12) + octave_offset27    pitch = note_num % 1228    return "%s%d" % (constants.PITCHES[pitch], octave_num)29def make_ml64_notes(note_name, duration, ppq):30    durs = decompose_duration(duration, ppq, ml64_durations)31    if note_name == 'r' or note_name == 'c':32        retval = ''.join("%s(%s)" % (note_name, ml64_durations[f]) for f in durs)33    else:34        retval = "%s(%s)" % (note_name, ml64_durations[durs[0]])35        if len(durs) > 1:36            retval += ''.join("c(%s)" % (ml64_durations[f]) for f in durs[1:])37    return retval38def ml64_sort_order(c):39    """40    Sort function for measure contents.41    Items are sorted by time and then, for equal times, in this order:42     *  Patch Change43     *   Tempo44     *   Notes and rests45    """46    if isinstance(c, chirp.Note):47        return (c.start_time, 10)48    elif isinstance(c, Rest):49        return (c.start_time, 10)50    elif isinstance(c, MeasureMarker):51        return (c.start_time, 1)52    elif isinstance(c, TempoEvent):53        return (c.start_time, 3)54    elif isinstance(c, ProgramEvent):55        return (c.start_time, 2)56    else:57        return (c.start_time, 5)58def events_to_ml64(events, song, last_continue=False):59    """60    Takes a list of events (such as a measure or a track) and converts it to ML64 commands. If the previous61    list (such as the previous measure) had notes that were not completed, set last_continue.62    :param events:63    :type events:64    :param song:65    :type song:66    :param last_continue:67    :type last_continue:68    :return:69    :rtype: tuple70    """71    content = []72    for e in events:73        if isinstance(e, chirp.Note):74            if last_continue:75                tmp_note = make_ml64_notes('c', e.duration, song.metadata.ppq)76            else:77                tmp_note = make_ml64_notes(pitch_to_ml64_note_name(e.note_num), e.duration, song.metadata.ppq)78            content.append(tmp_note)79            last_continue = e.tied_from80        elif isinstance(e, Rest):81            tmp_note = make_ml64_notes('r', e.duration, song.metadata.ppq)82            content.append(tmp_note)83            last_continue = False84        elif isinstance(e, MeasureMarker):85            content.append('[m%d]' % e.measure_number)86        elif isinstance(e, ProgramEvent):87            content.append('i(%d)' % e.program)88    return (content, last_continue)89class ML64(ChiptuneSAKIO):90    @classmethod91    def cts_type(cls):92        return "ML64"93    def __init__(self):94        ChiptuneSAKIO.__init__(self)95        self.set_options(format='standard')96    @property97    def format(self):98        return self.get_option('format')[0].lower()99    def to_bin(self, song, **kwargs):100        """101        Generates an ML64 string for a song102        :param song: song103        :type song: ChirpSong or mchirp.MChirpSong104        :return: ML64 encoding of song105        :rtype: str106        :keyword options:107            * **format** (string) - 'compact', 'standard', or 'measures';108              'measures' requires MChirp; the others convert from Chirp109        """110        self.set_options(**kwargs)111        if isinstance(song, chirp.ChirpSong):112            if self.format == 'm':113                raise ChiptuneSAKTypeError("Cannot export Chirp song to Measures format")114            else:115                return self.export_chirp_to_ml64(song)116        elif isinstance(song, mchirp.MChirpSong):117            if self.format != 'm':118                tmp_song = chirp.ChirpSong(song)119                tmp_song.quantize(*tmp_song.estimate_quantization())120                return self.export_chirp_to_ml64(tmp_song)121            else:122                return self.export_mchirp_to_ml64(song)123        else:124            raise ChiptuneSAKTypeError(f"Cannot export object of type {str(type(song))} to ML64")125    def to_file(self, song, filename, **kwargs):126        """127        Writes ML64 to a file128        :param song: song129        :type song: ChirpSong or mchirp.MChirpSong130        :return: ML64 encoding of song131        :rtype: str132        :keyword options:  see `to_bin()`133        """134        with open(filename, 'w') as f:135            f.write(self.to_bin(song, **kwargs))136    def export_chirp_to_ml64(self, chirp_song):137        """138        Export song to ML64 format, with a minimum number of notes, either with or without measure comments.139        With measure comments, the comments appear within the measure but are not guaranteed to be exactly at the140        beginning of the measure, as tied notes will take precedence.  In compact mode, the ML64 emitted is almost141        as small as possible.142        :param chirp_song:143        :type chirp_song:144        """145        output = []146        if not chirp_song.is_quantized():147            raise ChiptuneSAKQuantizationError("ChirpSong must be quantized for export to ML64")148        if any(t.qticks_notes < chirp_song.metadata.ppq // 4 for t in chirp_song.tracks):149            raise ChiptuneSAKQuantizationError("ChirpSong must be quantized to 16th notes or larger for ML64")150        if chirp_song.is_polyphonic():151            raise ChiptuneSAKPolyphonyError("All tracks must be non-polyphonic for export to ML64")152        mode = self.format153        output.append('ML64(1.3)')154        output.append('song(1)')155        output.append('tempo(%d)' % chirp_song.metadata.qpm)156        for it, t in enumerate(chirp_song.tracks):157            output.append('track(%d)' % (it + 1))158            track_events = []159            last_note_end = 0160            # Create a list of events for the entire track161            for n in t.notes:162                if n.start_time > last_note_end:163                    track_events.append(Rest(last_note_end, n.start_time - last_note_end))164                track_events.append(n)165                last_note_end = n.start_time + n.duration166            track_events.extend(t.program_changes)167            if mode == 's':  # Add measures for standard format168                last_note_end = max(n.start_time + n.duration for t in chirp_song.tracks for n in t.notes)169                measures = [m.start_time for m in chirp_song.measures_and_beats() if m.beat == 1]170                for im, m in enumerate(measures):171                    if m < last_note_end:172                        track_events.append(MeasureMarker(m, im + 1))173            track_events.sort(key=ml64_sort_order)174            # Now send the entire list of events to the ml64 creator175            track_content, *_ = events_to_ml64(track_events, chirp_song)176            output.append(''.join(track_content).strip())177            output.append('track(-)')178        output.append('song(-)')179        output.append('ML64(-)')180        return '\n'.join(output)181    def export_mchirp_to_ml64(self, mchirp_song):182        """183        Export the song in ML64 format, grouping notes into measures.  The measure comments are guaranteed to184        appear at the beginning of each measure; tied notes will be split to accommodate the measure markers.185        :param mchirp_song: An mchirp song186        :type mchirp_song: MChirpSong187        """188        output = []189        output.append('ML64(1.3)')190        output.append('song(1)')191        output.append('tempo(%d)' % mchirp_song.metadata.qpm)192        for it, t in enumerate(mchirp_song.tracks):193            output.append('track(%d)' % (it + 1))194            measures = t.measures195            last_continue = False196            for im, measure in enumerate(measures):197                measure_content, last_continue = events_to_ml64(measure.events, mchirp_song, last_continue)198                output.append(''.join(measure_content))199            output.append('track(-)')200        output.append('song(-)')201        output.append('ML64(-)')...

test_tap.py

Source:test_tap.py

...25            <div id="b" style="background: pink; width: 50px; height: 50px">b</div>26        """27    )28    page.tap("#a")29    element_handle = track_events(page.query_selector("#b"))30    page.tap("#b")31    assert element_handle.json_value() == [32        "pointerover",33        "pointerenter",34        "pointerdown",35        "touchstart",36        "pointerup",37        "pointerout",38        "pointerleave",39        "touchend",40        "mouseover",41        "mouseenter",42        "mousemove",43        "mousedown",44        "mouseup",45        "click",46    ]47def test_should_not_send_mouse_events_touchstart_is_canceled(page):48    page.set_content("hello world")49    page.evaluate(50        """() => {51            // touchstart is not cancelable unless passive is false52            document.addEventListener('touchstart', t => t.preventDefault(), {passive: false});53        }"""54    )55    events_handle = track_events(page.query_selector("body"))56    page.tap("body")57    assert events_handle.json_value() == [58        "pointerover",59        "pointerenter",60        "pointerdown",61        "touchstart",62        "pointerup",63        "pointerout",64        "pointerleave",65        "touchend",66    ]67def test_should_not_send_mouse_events_touchend_is_canceled(page):68    page.set_content("hello world")69    page.evaluate(70        """() => {71            // touchstart is not cancelable unless passive is false72            document.addEventListener('touchend', t => t.preventDefault());73        }"""74    )75    events_handle = track_events(page.query_selector("body"))76    page.tap("body")77    assert events_handle.json_value() == [78        "pointerover",79        "pointerenter",80        "pointerdown",81        "touchstart",82        "pointerup",83        "pointerout",84        "pointerleave",85        "touchend",86    ]87def track_events(target: ElementHandle) -> JSHandle:88    return target.evaluate_handle(89        """target => {90            const events = [];91            for (const event of [92                'mousedown', 'mouseenter', 'mouseleave', 'mousemove', 'mouseout', 'mouseover', 'mouseup', 'click',93                'pointercancel', 'pointerdown', 'pointerenter', 'pointerleave', 'pointermove', 'pointerout', 'pointerover', 'pointerup',94                'touchstart', 'touchend', 'touchmove', 'touchcancel',])95                target.addEventListener(event, () => events.push(event), false);96            return events;97        }"""...

Playwright tutorial

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Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
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