A variable
Python in the process variables need not be declared variable assignment variable is declared and defined process
Variables created in memory, including the identification of variables, variable names and data
Each variable must be assigned before use, this variable will be created after variable assignment
Format: variable name = value Note: there must be a space on both sides of the equal sign
Equal sign (=) to the left is a variable name
Equal sign (=) is the right value stored in the variable
Equal sign (=) is used to assign
E.g:
number1 = 1
number2 = 0.99
name = "heroes"
Multiple variable assignment:
Variable Variable 1 = 2 = 3 = the value of the variable
Variable 1, variable 2, 3 variable = value 1, value 2 and value 3
2, the identifier
Python is a variable name, the function name, class name identifiers belong
(1) In Python, identified by letters, underscore (_) and digits
(2) the identifier is the characters can be letters or underscore (_), can not begin with a number
(3) the identifier is case-sensitive
(4) Python identifier must be unique in keyword
Python method Keyword View:
import keyword
keyword.kwlist
