子曰：学而时习之，不亦说乎
变量好比一个"容器"，可以存储与之相关联的东西。
message = "Hello Python world!"
print(message)上述代码中message就是一个“容器”，而"Hello Python world!"就是需要存储的数据，通过print()方法可以把容器里的东西展示打印出来。
| - | ||||
|---|---|---|---|---|
| False | class | finally | is | return |
| None | comtinue | for | lambda | try |
| True | def | from | nonlocal | white |
| and | del | global | not | with |
| as | elif | if | or | yield |
| assert | else | import | pass | |
| break | except | in | raise |
| - | ||||
|---|---|---|---|---|
| abs() | divmod() | input() | open() | staticmethod() |
| all() | enumerate() | int() | ord() | str() |
| any() | eval() | isinstance() | pow() | sum() |
| basestring() | execfile() | issubclass() | print() | super() |
| bin() | file() | iter() | property() | tuple() |
| bool() | filter() | len() | range() | type() |
| bytearray | float() | list() | raw_input() | unichr() |
| callable | format() | locals() | reduce() | |
| chr() | frozenset() | long() | reload() | vars() |
| classmethod | getattr | map() | repr() | xrange() |
| cmp() | globals() | max() | reversed() | zip() |
| compile() | hasattr() | memoryview() | round() | import() |
| complex() | hash() | min() | set() | apply() |
| delattr() | help() | next() | setattr() | buffer() |
| dict() | hex() | object() | slice() | coerce() |
| dir() | id() | oct() | sorted() | intern() |
原文：https://www.cnblogs.com/mo-he/p/10869308.html