Python repr() usage and examples

Python built-in functions

The repr() function returns the printable representation form of the given object.

The syntax of repr() is:

repr(obj)

repr() parameters

repr() function takes a single parameter:

• obj -Must return the object in its printable representation form

repr() return value

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

Example1: How repr() works in Python?

var　=　'foo'
print(repr(var))

Output result

"'foo'"

Here, we providevarAssign a value 'foo'. Then, the repr() function returns "'foo'", with 'foo' inside the double quotes.

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

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

Example2: Implement __repr__() for custom objects

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

You can easily implement/Rewriting __repr__() and the different ways repr() works.

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

Python built-in functions