#In Python The only characters that are allowed for varibale names are
# letters, numbers, and underscores. Also, they can't start with numbers.

this_is_valid_variable = 7
print (this_is_valid_variable)

12var = 7

print (12var)  # This is an invalid variable name  #O/P:-invalid syntax

var test = 5 

print (var test) # Space is not allowed in variable name #O/P:- invalid syntax

#Lastname,LastName and lastname are three different variable names in Python.
lastname = "Test"
Lastname = "Test2"
LastName = "Test3"

print (lastname, LastName, Lastname)