change a string to number python code example

Example 1: python string to int

# Use the function int() to turn a string into an integer
string = '123'
integer = int(string)
integer
# Output:
# 123

Example 2: python convert string to int

# this is a string
a = "12345"
# use int() to convert to integer
b = int(a)

# if string cannot be converted to integer,
a = "This cannot be converted to an integer"
b = int(a)  # the interpreter raises ValueError

Example 3: convert string to number python

>>> x = "23"
>>> y = "20"
>>> z = int(x) - int(y)
>>> z
3