# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

##运算符 算数运算符: ---> 赋值运算符 >>>返回结果为值 + # 加 - # 减 * # 乘 / # 除以 ** # 幂运算 % # 取余数 // # 取商 #################### 赋值运算符: ---> 算数运算符 >>>返回结果为值 a = a + b == a += b a = a - b == a -= b a = a * b == a *= b a = a / b == a /= b a = a ** b == a **…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

# encoding: utf-8 # module builtins # from (built-in) # by generator 1.147 """ Built-in functions, exceptions, and other objects. Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices. """ # no imports # V…

流程控制 条件判断 if单分支:当一个“条件”成立时执行相应的操作. 语法结构: if 条件: command 流程图: 示例:如果3大于2,那么输出字符串"very good" #!/usr/bin/env python # -*- coding: utf-8 -*- if 3 > 2: print("very good") if双分支:当“条件成立”时候执行一个操作,或者“条件不成立”执行另外一个操作操作. 语法结构: if 条件: command1 el…

1 数字: int 2 3 int : 转换,将字符串转化成数字 4 num1 = '123' 5 num2 = int (a) 6 numadd = num2 +1000 7 print(num2) 8 9 num3 = 'a' 10 v = int (num3 , base = 16 ) # base==n ,base 表示进制,base = 16 就是16进制 11 print(v) 12 13 14 bit_length : 至少用几个二进制位表示 15 age = '18' 16 a…