Best Python code snippet using autotest_python
priorityQueue.py
Source:priorityQueue.py  
1class Node:2    def __init__(self, value, priority):3        self.value = value4        self.priority = priority5    def get_priority(self):6        return self.priority7    def get_value(self):8        return self.value9# we will be using min heap for this10class PriorityQueue:11    def __init__(self):12        self.values = []13    def enqueue(self, value, priority):14        new_node = Node(value, priority)15        self.insert(new_node)16    def insert(self, node):17        if len(self.values) <= 0:18            self.values.append(node)19            return20        self.values.append(node)21        index = len(self.values) - 122        parent_index = (index - 1) // 223        while self.values[index].get_priority() < self.values[parent_index].get_priority() and parent_index >= 0:24            self.values[parent_index], self.values[index] = self.values[index], self.values[parent_index]25            index = parent_index26            parent_index = (index - 1) // 227    def dequeue(self):28        return self.extract_min()29    def extract_min(self):30        if len(self.values) <= 0:31            return None32        if len(self.values) == 1:33            return self.values.pop()34        length = len(self.values) - 135        self.values[0], self.values[length] = self.values[length], self.values[0]36        return_node = self.values.pop()37        index = 038        while True:39            left_child = (2*index) + 140            right_child = (2 * index) + 241            if left_child < 0 or left_child >= length:42                return return_node43            if right_child < 0 or right_child >= length:44                return return_node45            # \ is for simplified operation, in python in expression if we wanna go to new line, we use \46            if self.values[index].get_priority() < self.values[left_child].get_priority() and self.values[index].get_priority() < self.values[right_child].get_priority():47                return return_node48            if self.values[index].get_priority() > self.values[right_child].get_priority() > self.values[left_child].get_priority():49                self.values[index], self.values[left_child] = self.values[left_child], self.values[index]50                index = left_child51                continue52            if self.values[index].get_priority() > self.values[left_child].get_priority() > self.values[right_child].get_priority():53                self.values[index], self.values[right_child] = self.values[right_child], self.values[index]54                index = right_child55                continue56            if self.values[index].get_priority() > self.values[left_child].get_priority():57                self.values[index], self.values[left_child] = self.values[left_child], self.values[index]58                index = left_child59                continue60            if self.values[index].get_priority() > self.values[right_child].get_priority():61                self.values[index], self.values[right_child] = self.values[right_child], self.values[index]62                index = right_child63                continue64    def returnQueue(self):65        return_heap = []66        for i in range(len(self.values)):67            value_priority_pair = {self.values[i].get_priority(): self.values[i].get_value()}68            return_heap.append(value_priority_pair)...a1_test.py
Source:a1_test.py  
...12queue.insert('H', 20)13queue.insert('U', -5)14queue.insert('X', -20)15queue.changepriority(3, 5)16print(queue.getoddlist().get_priority())17print(queue.getevenlist().get_item())18print(queue.getoddlist().get_next().get_priority())19print(queue.getevenlist().get_next().get_priority())20print(queue.getoddlist().get_next().get_next().get_priority())21print(queue.getevenlist().get_next().get_next().get_priority())22print(queue.getoddlist().get_next().get_next().get_next().get_priority())23print(queue.getevenlist().get_next().get_next().get_next().get_priority())24print(queue.getoddlist().get_next().get_next().get_next().get_next().get_priority())
...a1_test2.py
Source:a1_test2.py  
...13queue.insert('G', 0)14queue.insert('H', -88)15queue.insert('H', 99)1617print(queue.getoddlist().get_priority())18print(queue.getevenlist().get_priority())19print(queue.getoddlist().get_next().get_priority())20print(queue.getevenlist().get_next().get_priority())21print(queue.getoddlist().get_next().get_next().get_priority())22print(queue.getevenlist().get_next().get_next().get_priority())23print(queue.getoddlist().get_next().get_next().get_next().get_priority())24print(queue.getevenlist().get_next().get_next().get_next().get_priority())
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