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# Отчет по теме 1
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Бережков Дмитрий, А-01-23
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## Изучение среды IDLE
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```py
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>>> print('Hello')
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Hello
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>>> h=input('Your name=')
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Your name=Dima
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>>>print(h)
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Dima
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>>> exit()
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```
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## Настройки рабочего каталога среды
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```py
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>>> import os
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>>> os.chdir('C:\\MPEI\\PO_ASY\\BerezhkovGit\\python-labs\\TEMA1')
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```
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## Файл Pr0.py
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Содержимое файла:
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```py
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print('Hello')
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h=input('Your name=')
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print(h)
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import os
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os.chdir('C:\\MPEI\\PO_ASY\\BerezhkovGit\\python-labs\\TEMA1')
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```
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Результат выполнения программы:
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```py
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>>>
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=================== RESTART: C:\MPEI\PO_ASY\BerezhkovGit\python-labs\TEMA1\Pr0.py ==================
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Hello
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Your name=Dima
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Dima
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```
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Альтернативный способ запуска программы на исполнение:
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```py
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>>> import Pr0
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Hello
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Your name=Dima
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Dima
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```
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## Файл Prb1.py
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Содержимое файла:
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```py
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name = input("Как Вас зовут? ")
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print("Привет,", name)
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```
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Результат выполнения программы:
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```py
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================== RESTART: C:\MPEI\PO_ASY\BerezhkovGit\python-labs\TEMA1\prb1.py ==================
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Как Вас зовут? Dima
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Привет, Dima
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```## __pycache__ и содержимое файла Pr0.cpython-34.pyc
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Содержимое файла:
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```py
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у
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Гh№ г у` • \ " S 5 \" S5 r\ " \5 SSKr\R " S5 g)ЪHelloz
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Your name=й Nz-C:\MPEI\PO_ASY\BerezhkovGit\python-labs\TEMA1)ЪprintЪinputЪhЪosЪchdir© у Ъ4C:\MPEI\PO_ASY\BerezhkovGit\python-labs\TEMA1\Pr0.pyЪ<module>r s- рб Ђg„Щ €УЂЩ Ђa„Ы Ш ‡‚Р =Х >r
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```
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В папке __pycache__ хранится скомпилированный двоичный код, который нужен для оптимизации
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## Раздел помощи(help)
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```py
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>>> help(print)
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Help on built-in function print in module builtins:
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print(*args, sep=' ', end='\n', file=None, flush=False)
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Prints the values to a stream, or to sys.stdout by default.
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sep
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string inserted between values, default a space.
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end
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string appended after the last value, default a newline.
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file
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a file-like object (stream); defaults to the current sys.stdout.
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flush
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whether to forcibly flush the stream.
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```
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```py
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>>> help(print); help(input)
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Help on built-in function print in module builtins:
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print(*args, sep=' ', end='\n', file=None, flush=False)
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Prints the values to a stream, or to sys.stdout by default.
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sep
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string inserted between values, default a space.
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end
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string appended after the last value, default a newline.
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file
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a file-like object (stream); defaults to the current sys.stdout.
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flush
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whether to forcibly flush the stream.
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Help on built-in function input in module builtins:
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input(prompt='', /)
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Read a string from standard input. The trailing newline is stripped.
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The prompt string, if given, is printed to standard output without a
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trailing newline before reading input.
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If the user hits EOF (*nix: Ctrl-D, Windows: Ctrl-Z+Return), raise EOFError.
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On *nix systems, readline is used if available.
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```
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## Файл tdemo_chaos.py
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Содержание файла:
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```py
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# File: tdemo_chaos.py
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# Author: Gregor Lingl
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# Date: 2009-06-24
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# A demonstration of chaos
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from turtle import *
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N = 80
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def f(x):
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return 3.9*x*(1-x)
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def g(x):
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return 3.9*(x-x**2)
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def h(x):
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return 3.9*x-3.9*x*x
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def jumpto(x, y):
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penup(); goto(x,y)
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def line(x1, y1, x2, y2):
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jumpto(x1, y1)
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pendown()
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goto(x2, y2)
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def coosys():
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line(-1, 0, N+1, 0)
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line(0, -0.1, 0, 1.1)
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def plot(fun, start, color):
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pencolor(color)
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x = start
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jumpto(0, x)
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pendown()
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dot(5)
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for i in range(N):
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x=fun(x)
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goto(i+1,x)
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dot(5)
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def main():
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reset()
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setworldcoordinates(-1.0,-0.1, N+1, 1.1)
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speed(0)
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hideturtle()
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coosys()
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plot(f, 0.35, "blue")
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plot(g, 0.35, "green")
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plot(h, 0.35, "red")
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# Now zoom in:
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for s in range(100):
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setworldcoordinates(0.5*s,-0.1, N+1, 1.1)
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return "Done!"
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if __name__ == "__main__":
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main()
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mainloop()
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```
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Результат выполнения программы:
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<image src="chaos.png">
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## Работа модуля Turtle, пример clock
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<image src="clock.png">
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