Python str() built-in function

From the Python 3 documentation

Return a string version of object. If object is not provided, returns the empty string. Otherwise, the behavior of str() depends on whether encoding or errors is given.

Examples

>>> # transform an integer to a string
>>> from_integer = str(29)
>>> from_integer
# '29'
>>> type(from_integer)
# <class 'str'>

>>> # transform a float to string
>>> from_float = str(-3.14)
>>> from_float
# '-3.14'
>>> type(from_float)
# <class 'str'>

>>> # return an empty string
>>> str()
# ''