 | Variables are not declared |
| Variables hold references to objects of any type
a = 3 # reference to an int object containing 3
a = 3.0 # reference to a float object containing 3.0
a = '3.' # reference to a string object containing '3.'
a = ['1', 2] # reference to a list object containing
# a string '1' and an integer 2
|
| Test for a variable's type:
if isinstance(a, int): # int? if isinstance(a, (list, tuple)): # list or tuple? |
