How to use getchar method in ATX

Best Python code snippet using ATX

proof_scanner.py

Source:proof_scanner.py

1PLUS = 1; # +2MINUS = 2; # -3INCC = 3; # ++4DECC = 4; # --5MULT = 5; # *6DIV = 6; # /7MOD = 7; # %8AND = 8; # and9OR = 9; # or10NOT = 10; # not | !11EQ = 11; # =12NE = 12; # !=13LT = 13; # <14GT = 14; # >15LE = 15; # <=16GE = 16; # >=17BECOMES = 17; # :=18LINEEND = 18; # \n19LPAREN = 19; # (20RPAREN = 20; # )21LBRAK = 21; # [22RBRAK = 22; # ]23LCURLY = 21; # {24RCURLY = 22; # }25COMMA = 23; # ,26INTEGER = 30; # `val` holds corresponding number27REAL = 31; # `val` holds corresponding number28STRING_LITERAL = 32; # `val` holds string contents29IDENT = 33; # `val` holds string identifier30INT = 40 # int31FLOAT = 41 # float32STRING = 42 # str33BOOL = 43 # bool34DO = 50; # do35END = 51; # end36IF = 52; # if37THEN = 53; # then38ELSE = 54; # else39WHILE = 55; # while40PROGRAM = 55; # program41FUNCTION = 56; # define42RETURN = 57; # return43OUTPUT = 58; # output44COLON = 80; # :45EOF = 99;46KEYWORDS = {'int': INT, 'real': FLOAT, 'str': STRING, 'bool': BOOL, 'if': IF,47    'then': THEN, 'else': ELSE, 'do': DO, 'end': END,  'while': WHILE,48    'and': AND, 'or': OR, 'not': NOT, 'program': PROGRAM, 'define': FUNCTION,49    'return': RETURN, 'output': OUTPUT}50def init(file : str, src : str) -> None:51    # Initializes scanner for new source code52    global line, lastline, errline, pos, lastpos, errpos, filename53    global sym, val, error, source, index, lastsym, lastval54    line, lastline, errline = 0, 0, 055    pos, lastpos, errpos = 0, 0, 056    sym, val, error = None, None, False57    lastsym, lastval = None, None58    source, index, filename = src, 0, file59    getChar(); getSym()60def getChar():61    global line, lastline, pos, lastpos, ch, index62    if index == len(source): ch = chr(0)63    else:64        ch, index = source[index], index + 165        lastpos = pos66        if ch == '\n':67            pos, line = 0, line + 168        else:69            lastline, pos = line, pos + 170def mark(msg):71    global errline, errpos, error, filename, sym72    if not error or lastline > errline or lastpos > errpos:73        print('file',filename,'error: line', lastline+1, 'pos', lastpos, msg,'<last sym',str(sym)+'>')74    error = True75    errline, errpos = lastline, lastpos76def number():77    global sym, val78    sym, val, frac, div, lastval = INTEGER, 0, 0, 10, val79    while '0' <= ch <= '9':80        val = 10 * val + int(ch)81        getChar()82    if ch == '.':83        getChar()84        val = REAL85        while '0' <= ch <= '9':86            val =  val + int(ch) / div87            getChar(); div /= 1088    if val >= 2**31:89        mark('number too large'); val = 090def raw_string(open : str):91    global sym, val, lastval92    getChar()93    start = index - 194    while chr(0) != ch != open: getChar()95    if ch == chr(0): mark('string not terminated'); sym = None;96    else:97        sym = STRING_LITERAL98        val, lastval = source[start:index-1], val99        getChar(); # Get rid of terminating '100def identKW():101    global sym, val, lastval102    start = index - 1103    while ('A' <= ch <= 'Z') or ('a' <= ch <= 'z') or ('0' <= ch <= '9') or (ch == '_'): getChar()104    val, lastval = source[start:index-1], val105    sym = KEYWORDS[val] if val in KEYWORDS else IDENT # (USRFUNC if val in usrfunc else IDENT)106def blockcomment():107    while chr(0) != ch:108        if ch == '*':109            getChar()110            if ch == '/':111                 getChar(); break112        else:113            getChar()114    if ch == chr(0): mark('comment not terminated')115    else: getChar()116# Keeps taking inputs until a newline or EOF is found117def linecomment():118    while chr(0) != ch != '\n': getChar()119# Determines the next symbol in the input120def getSym():121    global sym, lastsym122    lastsym = sym123    while chr(0) < ch <= ' ' and ch != '\n':124        getChar()125    if 'A' <= ch <= 'Z' or 'a' <= ch <= 'z': identKW()126    elif '0' <= ch <= '9': number()127    elif ch == "'" or ch == '"': raw_string(ch)128    elif ch == '\n': getChar(); sym = LINEEND129    elif ch == '+':130        getChar();131        if ch == '+': getChar(); sym = INCC132        else: sym = PLUS133    elif ch == '-':134        getChar();135        if ch == '-': getChar(); sym = DECC136        else: sym = MINUS137    elif ch == '*': getChar(); sym = MULT138    elif ch == '/':139        getChar();140        if ch == '/': linecomment()141        else: sym = DIV142    elif ch == '%': getChar(); sym = MOD143    elif ch == ':':144        getChar();145        if ch == '=': getChar(); sym = BECOMES146        else: sym = COLON147    elif ch == '=': getChar(); sym = EQ148    elif ch == '!':149        getChar();150        if ch == '=': getChar(); sym = NE151        # FOR SIMPLER WRITING152        else: sym = NOT153    elif ch == '<':154        getChar();155        if ch == '=': getChar(); sym = LE156        else: sym = LT157    elif ch == '>':158        getChar();159        if ch == '=': getChar(); sym = GE160        else: sym = GT161    elif ch == ';': getChar(); sym = LINEEND162    elif ch == '\n': getChar(); sym = LINEEND163    elif ch == ',': getChar(); sym = COMMA164    elif ch == '(': getChar(); sym = LPAREN165    elif ch == ')': getChar(); sym = RPAREN166    elif ch == '[': getChar(); sym = LBRAK167    elif ch == ']': getChar(); sym = RBRAK168    elif ch == '|':169        getChar()170        if ch == '|': getSym()171        sym = OR172        mark("boolean or operation is written as 'or'")173    elif ch == '&':174        getChar()175        if ch == '&': getSym()176        sym = AND177        mark("boolean and operation is written as 'and'")178    # FOR SIMPLER WRITING179    elif ch == '{': getChar(); sym = DO # LCURLY180    elif ch == '}': getChar(); sym = END # RCURLY181    elif ch == ';': getChar(); sym = LINEEND182    elif ch == chr(0): sym = EOF...

SC.py

Source:SC.py

1TIMES = 1; DIV = 2; MOD = 3; AND = 4; PLUS = 5; MINUS = 62OR = 7; EQ = 8; NE = 9; LT = 10; GT = 11; LE = 12; GE = 133PERIOD = 14; COMMA = 15; COLON = 16; NOT = 17; LPAREN = 184RPAREN = 19; LBRAK = 20; RBRAK = 21; LARROW = 22; RARROW = 235LBRACE = 24; RBRACE = 25; CARD = 26; COMPLEMENT = 27; UNION = 286INTERSECTION = 29; ELEMENT = 30; SUBSET = 31; SUPERSET = 327DOTDOT = 33; THEN = 34; DO = 35; BECOMES = 36; NUMBER = 378IDENT = 38; SEMICOLON = 39; ELSE = 40; IF = 41; WHILE = 429CONST = 43; TYPE = 44; VAR = 45; SET = 46; PROCEDURE = 4710PROGRAM = 48; INDENT = 49; DEDENT = 50; EOF = 51; FUNC = 5211def init(src):12    global line, lastline, pos, lastpos13    global ch, sym, val, source, index, indents14    line, lastline = 0, 115    pos, lastpos = 1, 116    ch, sym, val, source, index = '\n', None, None, src, 017    indents = [1]; getChar(); getSym()18def getChar():19    global line, lastline, pos, lastpos, ch, index20    if index == len(source): ch, index, pos = chr(0), index + 1, 121    else:22        lastpos = pos23        if ch == '\n':24            pos, line = 1, line + 125        else:26            lastline, pos = line, pos + 127        ch, index = source[index], index + 128def mark(msg):29    raise Exception('line ' + str(lastline) + ' pos ' + str(lastpos) + ' ' + msg)30def number():31    global sym, val32    sym, val = NUMBER, 033    while '0' <= ch <= '9':34        val = 10 * val + int(ch)35        getChar()36    if val >= 2**31: mark('number too large')37KEYWORDS = {'div': DIV, 'mod': MOD, 'and': AND, 'or': OR, 'then': THEN, 'do': DO,38     'else': ELSE, 'if': IF, 'while': WHILE, 'const': CONST, 'type': TYPE,39     'var': VAR, 'set': SET, 'procedure': PROCEDURE, 'program': PROGRAM}40def identKW():41    global sym, val42    start = index - 143    while ('A' <= ch <= 'Z') or ('a' <= ch <= 'z') or ('0' <= ch <= '9'): getChar()44    val = source[start : index - 1]45    sym = KEYWORDS[val] if val in KEYWORDS else IDENT46def comment():47    if ch == '/': getChar()48    else: mark('// expected')49    while chr(0) != ch != '\n': getChar()50def getSym():51    global sym, indents, newline52    if pos < indents[0]:53        indents = indents[1:]; sym = DEDENT54    else:55        while ch in ' /':56            if ch == ' ': getChar() # skip blanks between symbols57            else: comment()58        if ch == '\n': # possibly INDENT, DEDENT59            while ch == '\n': # skip blank lines60                getChar()61                while ch in ' /':62                    if ch == ' ': getChar() # skip indentation63                    else: comment()64            if pos < indents[0]: sym, indents = DEDENT, indents[1:]; return65            elif pos > indents[0]: sym, indents = INDENT, [pos] + indents; return66        newline = pos == indents[0]67        if 'A' <= ch <= 'Z' or 'a' <= ch <= 'z': identKW()68        elif '0' <= ch <= '9': number()69        elif ch == 'Ã': getChar(); sym = TIMES70        elif ch == '+': getChar(); sym = PLUS71        elif ch == '-': getChar(); sym = MINUS72        elif ch == '=': getChar(); sym = EQ73        elif ch == 'â ': getChar(); sym = NE74        elif ch == '<': getChar(); sym = LT75        elif ch == 'â¤': getChar(); sym = LE76        elif ch == '>': getChar(); sym = GT77        elif ch == 'â¥': getChar(); sym = GE78        elif ch == ';': getChar(); sym = SEMICOLON79        elif ch == ',': getChar(); sym = COMMA80        elif ch == ':':81            getChar()82            if ch == '=': getChar(); sym = BECOMES83            else: sym = COLON84        elif ch == '.':85            getChar();86            if ch == '.': getChar(); sym = DOTDOT87            else: sym = PERIOD88        elif ch == 'Â¬': getChar(); sym = NOT89        elif ch == '(': getChar(); sym = LPAREN90        elif ch == ')': getChar(); sym = RPAREN91        elif ch == '[': getChar(); sym = LBRAK92        elif ch == ']': getChar(); sym = RBRAK93        elif ch == 'â': getChar(); sym = LARROW94        elif ch == 'â': getChar(); sym = RARROW95        elif ch == '{': getChar(); sym = LBRACE96        elif ch == '}': getChar(); sym = RBRACE97        elif ch == '#': getChar(); sym = CARD98        elif ch == 'â': getChar(); sym = COMPLEMENT99        elif ch == 'âª': getChar(); sym = UNION100        elif ch == 'â©': getChar(); sym = INTERSECTION101        elif ch == 'â': getChar(); sym = ELEMENT102        elif ch == 'â': getChar(); sym = SUBSET103        elif ch == 'â': getChar(); sym = SUPERSET104        elif ch == chr(0): sym = EOF...

secure-password-generator.py

Source:secure-password-generator.py

1import random2import time3charTypes = ['digit', 'letter', 'symbol']4digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']5letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']6symbols = ['!', '?', '$', '&', '#', '%', '*']7def getChar():8  charType = random.choice(charTypes)9  if charType == 'digit':10    char = random.choice(digits)11  elif charType == 'letter':12    char = random.choice(letters)13  elif charType == 'symbol':14    char = random.choice(symbols)15  return char16  17char1 = getChar()18char2 = getChar()19char3 = getChar()20char4 = getChar()21char5 = getChar()22char6 = getChar()23char7 = getChar()24char8 = getChar()25char9 = getChar()26char10 = getChar()27char11 = getChar()28char12 = getChar()29char13 = getChar()30char14 = getChar()31char15 = getChar()32char16 = getChar()33char17 = getChar()34char18 = getChar()35char19 = getChar()36char20 = getChar()37char21 = getChar()38char22 = getChar()39char23 = getChar()40char24 = getChar()41char25 = getChar()42result = char1 + char2 + char3 + char4 + char5 + char6 + char7 + char8 + char9 + char10 + char11 + char12 + char13 + char14 + char15 + char16 + char17 + char18 + char19 + char20 + char21 + char22 + char23 + char24 + char2543print('WARNING: The generated password is NOT easy to remember! It is recommended that you save it somewhere safe.')44print('Your generated password is: ' + result)...

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