摘要：
"""A collection of string constants. Public module variables: whitespace -- a string containing all ASCII whitespace ascii_lowercase -- a string conta 阅读全文
摘要：
>>> a = [1,2,3] >>> help(a) Help on list object: class list(object) | list(iterable=(), /) | | Built-in mutable sequence. | | If no argument is given, 阅读全文
摘要：
>>> help(str) Help on class str in module builtins: class str(object) | str(object='') -> str | str(bytes_or_buffer[, encoding[, errors]]) -> str | | 阅读全文