print(string.ascii_letters + string.digits + string.punctuation) # write string at once in above code

"""
"""
'''
'''

# String concatenation
a = 'hello'
b = 'world'
c = a + b
print(c)

a = 'hello'
b = 'world'
c = a + ' ' + b
print(c)

# String casting
a = 10
b = '20'
c = a + int(b)
print(c)

# Specify data type
a = 10
b = '20'
c = a + int(b)
print(type(c))
print(c)

# Format
a = 10
b = '20'
c = '{0} + {1} = {2}'.format(a, b, a + int(b))
print(c)