`

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。




 

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