Python repr()

 numbers = [1, 2, 3, 4, 5] 
# create a printable representation of the list printable_numbers = repr(numbers)
 print(printable_numbers) # Output: [1, 2, 3, 4, 5]

repr() Syntax

The syntax of repr() is:

repr(obj)

repr() Parameters

The repr() function takes a single parameter:

• obj - the object whose printable representation has to be returned

repr() Return Value

The repr() function returns a printable representational string of the given object.

Example 1: How repr() works in Python?

 var = 'foo' 
print(repr(var))

Output

 'foo'

Here, we assign a value 'foo' to var. Then, the repr() function returns "'foo'", 'foo' inside double-quotes.

When the result from repr() is passed to eval(), we will get the original object (for many types).

>>> eval(repr(var)) 'foo'

Example 2: Implement __repr__() for custom objects

Internally, repr()function calls __repr__() of the given object.

You can easily implement/override __repr__() so that repr() works differently.

 class Person: name = 'Adam' 
 def __repr__(self): return repr('Hello ' + self.name )
 print(repr(Person()))

Output

 'Hello Adam'

Also Read:

• Python Object Oriented Programming