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How to use __start method in ATX

Best Python code snippet using ATX

circular_linked_list.py

Source:circular_linked_list.py

1class Node:2    def __init__(self, element) -> None:3        self.data = element4        self.next = None5class CircularLinkedList:6    def __init__(self) -> None:7        self.__start = None8        self.__tail = None9    10    def insert_node_at_beginning(self, element):11        node = Node(element)12        if self.__start is None:13            node.next = node14            self.__tail = node15        else:16            node.next = self.__start17        self.__start = node18        self.__tail.next = self.__start19    def insert_node_at_end(self, element):20        node = Node(element)21        if self.__tail:22            self.__tail.next = node23        self.__tail = node24        node.next = self.__start25    def insert_node_at_index(self, element, index):26        node = Node(element)27        temp = self.__start28        for i in range(0, index-1):29            if temp.next:30                temp = temp.next31            else:32                raise RuntimeError("Invalid index")33        node.next = temp.next34        temp.next = node35    def delete_node_at_beginning(self):36        if self.__start is None:37            return   38        self.__start = self.__start.next39        self.__tail.next = self.__start40    def delete_node_at_end(self):41        if self.__tail is None:42            return43        temp = self.__start44        while temp.next != self.__tail:45            temp = temp.next46        self.__tail = temp47        temp.next = self.__start48    def delete_node_at_index(self, index):49        temp = self.__start50        for i in range(0, index-1):51            if temp.next:52                temp = temp.next53            else:54                raise RuntimeError("Invalid index")55        temp.next = temp.next.next56    def size(self):57        len = 058        temp = self.__start59        if not temp:60            return len61        len = 162        temp = temp.next63        while temp and temp != self.__start:64            len += 165            temp = temp.next66        return len67    def display(self):68        temp = self.__start69        if not temp:70            return71        print(temp.data, end=' ')72        temp = temp.next73        while temp and temp != self.__start:74            print(temp.data, end=' ')75            temp = temp.next76        print()77if __name__ == '__main__':78    circular_linked_list = CircularLinkedList()79    circular_linked_list.insert_node_at_beginning(1)80    circular_linked_list.insert_node_at_beginning(2)81    circular_linked_list.insert_node_at_beginning(3)82    circular_linked_list.insert_node_at_end(4)83    circular_linked_list.insert_node_at_end(5)84    circular_linked_list.insert_node_at_end(6)85    circular_linked_list.insert_node_at_index(11, 3)86    circular_linked_list.insert_node_at_index(15, 6)87    circular_linked_list.insert_node_at_index(19, 3)88    circular_linked_list.display()89    print("Size of list is " + str(circular_linked_list.size()))90    circular_linked_list.delete_node_at_beginning()91    circular_linked_list.delete_node_at_end()92    circular_linked_list.delete_node_at_index(3)93    circular_linked_list.display()...

coordinates.py

Source:coordinates.py

1from dataclasses import dataclass2@dataclass(eq=True, frozen=True)3class Coord:4    x: int5    y: int6    z: int = None7    def __repr__(self):8        if (self.z):9            return f'[{self.x}:{self.y}:{self.z}]'10        else:11            return f'[{self.x}:{self.y}]'12    def rotate(self, angle=0):13        (x, y) = [14            (self.x, self.y),15            (self.y, -self.x),16            (-self.x, -self.y),17            (-self.y, self.x)18        ][angle]19        return Coord(x, y)20class DeltaCoord(Coord):21    def __repr__(self):22        fmt = '{:+d}'23        if (self.z):24            return f'({fmt.format(self.x)}:{fmt.format(self.y)}:{fmt.format(self.z)})'25        else:26            return f'({fmt.format(self.x)}:{fmt.format(self.y)})'27class Move(object):28    def __init__(self, direction: DeltaCoord = None, start: Coord = None,29                 destination: Coord = None):30        self.__destination = destination31        self.__start = start32        self.__direction = direction33        self.__checkValues()34    def setStart(self, start: Coord = None):35        self.__start = start36        self.__checkValues()37    def setDirection(self, direction: DeltaCoord = None):38        self.__direction = direction39        if (self.__start):40            self.__destination = Coord(41                self.__start.x + self.__direction.x,42                self.__start.y + self.__direction.y,43                (self.__start.z or 0) + (self.__direction.z or 0)44            )45    def getDestination(self): return self.__destination46    def setDestination(self, destination: Coord = None):47        self.__destination = destination48        if (self.__start):49            self.__direction = Coord(50                self.__destination.x - self.__start.x,51                self.__destination.y - self.__start.y,52                (self.__destination.z or 0) - (self.__start.z or 0)53            )54    destination = property(getDestination, setDestination)55    def __checkValues(self):56        if (self.__start):57            if (self.__direction):58                self.__destination = Coord(59                    self.__start.x + self.__direction.x,60                    self.__start.y + self.__direction.y,61                    (self.__start.z or 0) + (self.__direction.z or 0)62                )63            elif (self.__destination):64                self.__direction = Coord(65                    self.__destination.x - self.__start.x,66                    self.__destination.y - self.__start.y,67                    (self.__destination.z or 0) - (self.__start.z or 0)68                )69    def __repr__(self):70        if (self.__start):71            return f"<{self.__class__.__name__} {self.__start}->{self.__destination}>"...

timeutil.py

Source:timeutil.py

1#!/usr/bin/python2#coding:utf83import time4class StopWatch(object):5    def __init__(self):6        self.reset()7    def reset(self):8        self.__start = 0.09        self.__second = 0.010    def go(self):11        if self.__start == 0.0:12            self.__start = time.time()13    def reset_go(self):14        self.reset()15        self.go()16    def pause(self):17        if self.__start != 0.0:18            now = time.time()19            self.__second = (now - self.__start)20            self.__start = 0.021    def get(self):22        '''return millsecond (æ¯«ç§)'''23        second = self.__second24        if self.__start != 0.0:25            now = time.time()26            second += (now - self.__start)27        return second * 100028def main():29    watch = StopWatch()30    watch.go()31    print watch.get()32    time.sleep(1.5)33    print watch.get()34    time.sleep(1.5)35    print watch.get()36    watch.pause()37    time.sleep(1.5)38    print watch.get()39if __name__ == '__main__':...

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