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Python turtle graphics online

Содержание
  1. Python Online Compiler
  2. Taking inputs (stdin)
  3. About Python
  4. Tutorial & Syntax help
  5. Loops
  6. 1. If-Else:
  7. Note:
  8. 2. For:
  9. Example:
  10. 3. While:
  11. Collections
  12. 1. List:
  13. Example:
  14. 2. Tuple:
  15. Example:
  16. 3. Set:
  17. Example:
  18. 4. Dictionary:
  19. Example:
  20. Supported Libraries
  21. «Черепашка на Питоне онлайн»
  22. Основные команды
  23. Документация для тех, кто знает английский язык
  24. Некоторые типы ошибок

Python Online Compiler

Write, Run & Share Python code online using OneCompiler’s Python online compiler for free. It’s one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler’s Python editor is easy and fast. The editor shows sample boilerplate code when you choose language as Python or Python2 and start coding.

Taking inputs (stdin)

OneCompiler’s python online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample python program which takes name as input and print your name with hello.

import sys name = sys.stdin.readline() print("Hello "+ name)

About Python

Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It’s is highly productive and efficient making it a very popular language.

Tutorial & Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition IF-ELSE is used.

if conditional-expression #code elif conditional-expression #code else: #code

Note:

Indentation is very important in Python, make sure the indentation is followed correctly

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2. For:

For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.

Example:

mylist=("Iphone","Pixel","Samsung") for i in mylist: print(i)

3. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

Collections

There are four types of collections in Python.

1. List:

List is a collection which is ordered and can be changed. Lists are specified in square brackets.

Example:

mylist=["iPhone","Pixel","Samsung"] print(mylist)

2. Tuple:

Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.

Example:

myTuple=("iPhone","Pixel","Samsung") print(myTuple)

Below throws an error if you assign another value to tuple again.

myTuple=("iPhone","Pixel","Samsung") print(myTuple) myTuple[1]="onePlus" print(myTuple)

3. Set:

Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.

Example:

4. Dictionary:

Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key — value pairs.

Example:

Supported Libraries

Following are the libraries supported by OneCompiler’s Python compiler

Name Description
NumPy NumPy python library helps users to work on arrays with ease
SciPy SciPy is a scientific computation library which depends on NumPy for convenient and fast N-dimensional array manipulation
SKLearn/Scikit-learn Scikit-learn or Scikit-learn is the most useful library for machine learning in Python
Pandas Pandas is the most efficient Python library for data manipulation and analysis
Matplotlib Matplotlib is a cross-platform, data visualization and graphical plotting library for Python programming and it’s numerical mathematics extension NumPy
DOcplex DOcplex is IBM Decision Optimization CPLEX Modeling for Python, is a library composed of Mathematical Programming Modeling and Constraint Programming Modeling

Источник

«Черепашка на Питоне онлайн»

t.begin_fill(), t.end_fill() Начать и остановить заливку. Например, нарисовать жёлтый круг с красным контуром:

t.color('red') t.fillcolor('yellow') t.begin_fill() t.circle(100) t.end_fill()
t.color('red') t.fillcolor('yellow') t.begin_fill() t.circle(100, 360, 5) t.end_fill()

Основные команды

t.circle(r, angle, n) Нарисовать дугу радиусом r, c углом angle и числом шагов n. Чем больше число шагов, тем плавнее дуга. Например, нарисуем дугу радиусом 50 пикселей, с углом 180 градусов и числом шагов 100:

t.circle(r, 360, n) Нарисовать многоугольник с радиусом описанной окружности r и числом сторон n. Например, нарисуем шестиугольник с радиусом описанной окружности 100 пикселей:

t.color(c) Изменить цвет на c. Рекомендуемые цвета: -black, -blue, -brown, -cyan, -gold, -green, -grey, -magenta, -orange, -pink, -red, -violet, -yellow. Цвет ставится в кавычки. Например, изменим цвет на красный:

Документация для тех, кто знает английский язык

Некоторые типы ошибок

SyntaxError: bad input on line 5
IndentationError: unindent does not match any outer indentation level on line 10
NameError: name 'p' is not defined on line 11
AttributeError: 'Turtle' object has no attribute 'print' on line 7

TypeError — ошибка в числе или типах аргументов, например, при вызове left() не задан угол поворота, правильно t.left(90), t.left(45), t.left(-20).

TypeError: left() takes exactly 1 positional argument(s) (0 given) on line 17

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