[Tutor] repr()

[Alan G]

> Possibly I am missing something, but how do you use the repr()
function?

THere are several ways of using repr, the most common is at the >>>
prompt.

>>> x = 5
>>> x
5
>>>

when I typed x at the >>> prompt Python called repr(x) to display the
result. This can be slightly different to using print which calls
str()
instead of repr(). Thats why:

>>> s = 'hello'
>>> s
'hello'
>>> print s
hello
>>>

produce different results.

The other waybthat you can use repr() is by using the backtick
notation

>>> print `s`
'hello'
>>>

Note that the quote signs are back, indicating that repr() has been
used.

> def myFunc(): print 'hello'
>
> Then run
>
> repr( myFunc )
>
>Which returns
>
> '<function myFunc at 0x009C6630>'


Just as you would see if you had done:

>>> def myfunc(): print 'hello'
>>> myfunc
'<function myFunc at 0x009C6630>'
>>>

> s = repr( myFunc() )
> print s

Which assigns NOne to s and then prints the repr() of None

> 'None'

As it should.

What did you think it should do?

Alan G.