message1 = "Hello"
number1 = 9
print(message1)
print(number1)
print(type(message1))
print(type(number1))

#in python case matters for identifier names.
#so, it is case sensitive.

print(numbEr) #NameError: name 'numbEr' is not defined.

      
#identifier names should start with a letter or underscore(_).
#letter could be capital or small letter.
#reserved words should not be used any variable/identifier in python.
try = "reserved key word" #Error:inalid syntax
