`

Python Conditionals and Loops

阅读更多

print,import




赋值




条件和条件语句:布尔值、bool函数、if、else、elif




嵌套代码块、相等运算符==、同一性运算符is、成员资格运算符in、字符串和序列比较、布尔运算符、断言





while、for、range





并行迭代、编号迭代、翻转和排序迭代





break、continue、循环中else子句


 

列表推导式(List Comprehension)

 

pass、del、exec、eval

pass语句什么都不做,可以作为占位符使用。

del语句用来删除变量,或者数据结构的一部分,但是不能用来删除值。

exec语句用于执行Python程序相同的方式来执行字符串。

内建的eval函数对写在字符串中的表达式进行计算并且返回结果。




 

summary


 

 

 

 

 

  • 大小: 82.3 KB
  • 大小: 81.4 KB
  • 大小: 88.8 KB
  • 大小: 77.8 KB
  • 大小: 75.3 KB
  • 大小: 85.6 KB
  • 大小: 97.6 KB
  • 大小: 78.3 KB
  • 大小: 97.3 KB
  • 大小: 67.5 KB
  • 大小: 67.7 KB
  • 大小: 83.4 KB
  • 大小: 81.4 KB
  • 大小: 82.2 KB
  • 大小: 78.6 KB
  • 大小: 90.4 KB
  • 大小: 83.4 KB
  • 大小: 124.8 KB
  • 大小: 105.1 KB
  • 大小: 77.6 KB
  • 大小: 69.8 KB
分享到:
评论

相关推荐

    Learn to Program with Python

    Learn fundamental programming concepts including: variables and assignment statements, functions, conditionals, loops, lists, strings, file input and output, Internet data, and data structures ...

    Python Programming - iCode Academy

    The Conditionals and Control Flow Chapter 5: Understanding Lists, Tuples, and Dictionaries Chapter 6: The Loops Chapter 7: Understanding the Functions Chapter 8: Coding a Full Program Chapter 9: ...

    Learn to Program with Python(Apress,2016)

    Learn fundamental programming concepts including: variables and assignment statements, functions, conditionals, loops, lists, strings, file input and output, Internet data, and data structures ...

    Coding project in python

    Step-by-step instructions teach essential coding basics like loops and conditionals, and outline seven fun and exciting projects, including a script that cracks secret codes, a quiz to challenge ...

    Coding.Projects.in.Python.2017.pdf

    Step-by-step instructions teach essential coding basics like loops and conditionals, and outline 14 fun and exciting projects, including a script that cracks secret codes, a quiz to challenge family ...

    INTRODUCTION TO PYTHON SCRIPTING FOR MAYA ARTISTS.

    Control structures such as conditionals (if-else statements) and loops (while and for loops) are essential for managing the flow of execution in Python scripts. - **Conditionals:** Conditionals allow...

    Python script for computational science

    It covers basic syntax and data types, control structures like loops and conditionals, and functions. This section is designed to build a strong foundation in Python programming, which is essential ...

    python核心编程第二版习题答案

    1. 循环与数字(Loops and numbers): - 使用`while`循环进行迭代,例如从0迭代到10(`while i )。 - 在循环中处理数字,如判断数字的正负,并输出结果。 2. 条件语句(Conditionals): - 使用`if`语句结合`for...

    Python Cookbook, 2nd Edition

    Python Cookbook, 2nd Edition By David Ascher, Alex Martelli, Anna Ravenscroft Publisher : O'Reilly Pub Date : March 2005 ISBN : 0-596-00797-3 Pages : 844 Copyright Preface The ...

    python学习笔记

    控制流(Conditionals and Loops) #### 1.9.1 条件语句(if) 条件语句用于基于某个条件执行不同的代码块。例如: ```python if x > 0: print("x is positive") elif x == 0: print("x is zero") else: print("x ...

    Core_python_programming_素材

    5. Loops and numbers a) i = 0 while i i += 1 b) for i in range(11): pass 6. Conditionals n = int(raw_input('enter a number: ')) if n print 'negative' elif n > 0: print 'positive' else: print 'zero' ...

    Introduction to EECS I (MIT)

    - **Loops:** While and for loops are introduced for repetitive tasks. ### Programs and Data #### Primitives, Composition, Abstraction, and Patterns This section focuses on the building blocks of ...

    Python Power - The Comprehensive Guide (2008).pdf

    About Python ............................................................................................1 What Is Python? ................................................................................

    MIT6_0001F16_Lec2.pdf

    2. 分支和条件语句(branching and conditionals):在Python中,使用if语句来控制程序的执行流程。这些语句需要根据条件的真假来决定是否执行特定的代码块。例如,使用if-else或elif-else结构来实现逻辑分支。 3. ...

    Google C++ Style Guide(Google C++编程规范)高清PDF

    Tabs Function Declarations and Definitions Function Calls Conditionals Loops and Switch Statements Pointer and Reference Expressions Boolean Expressions Return Values Variable and Array ...

    最简单的计算器的程序代码

    首先,我们需要了解基础的编程概念,包括变量(variables)、数据类型(data types)、条件语句(conditionals)、循环(loops)以及函数(functions)。在计算器程序中,变量用于存储用户输入的数字和运算结果,...

Global site tag (gtag.js) - Google Analytics