Convert int to string in Python

In python, integer cannot be concatenated with string directly. integer needs to be converted to string for concatenating. str function provided in python can be used to convert integer to string

Example
print(str(50) + ' Balloons')

Output
50 Balloons

When the concatenation is performed with string conversion, following exception is thrown
print(50 + ' Balloons')

Output
TypeError: unsupported operand type(s) for +: 'int' and 'str'