Explain the role of repr function.

• Python can convert any value to a string by making use of two functions repr() or str(). 
• The str() function returns representations of values which are human-readable
• while repr() generates representations which can be read by the interpreter.
• repr() returns a machine-readable representation of values, suitable for an exec command. 
• Following code sniipets shows working of repr() & str() :

def fun():

   y=2333.3

   x=str(y)

   z=repr(y)

   print " y :",y

   print "str(y) :",x

   print "repr(y):",z

>>fun()

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output

y : 2333.3

str(y) : 2333.3

repr(y) : 2333.3000000000002