python convert string to integer if it is a integer code example

Example 1: check if string can be converted to int python

# CHECKING IF INT
variable='3'
try:
    int(variable)
    # this will execute if it is integer
    print('You typed an int')
except ValueError:
  	# otherwise this will execute
    print('You did not type an int')

# CHECKING IF FLOAT
variable='3'
try:
    float(variable)
    print('You typed a float')
except ValueError:
    print('You did not type a float')

Example 2: how to convert string to int in python

# This kind of conversion of types is known as type casting
# Type of variable can be determined using this function type(variable)
>>> string = '123'
>>> type(string) # Getting type of variable string
<class 'str'>
>>> integer = int(string) # Converting str to int
>>> type(integer) 
<class 'int'>
>>> float_number = float(string) # Converting str to float.
>>> type(float_number) 
<class 'float'>
>>> print(string, integer, float_number)
123 123 123.0