Shulou(Shulou.com)06/02 Report--

* * represents the nether operation

/ / indicates division and rounding

\ indicates escape

R "can be used to avoid escaping

Used to concatenate strings

The string * number indicates the number of copied strings

The variable [0] represents the first in the variable, and [1] is the second.

The variable [- 1] represents the penultimate one in the variable, and [- 2] is the penultimate one.

Endswith () ends with xx

Startswith () starts with xxx

Isdigit () True if the string contains only numbers, otherwise False

Len () returns the string length

Lower () converts all uppercase letters in a string to lowercase

Replace (old,new) replacement string

Rstrip () removes the space at the end of the string

Upper () converts lowercase to uppercase in a string

Append () add list item

List.append () adds a new object to the end of the list

List.sort () sorts the list

List.clear () empties the list

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