Problems experienced while incrementing a variable in Python

Question

So, I was trying to increment a variable in Python and experienced few problems. Suppose the variable name is op and the code block is:

op = 1
op+=1
print(op)

The print statement always yields an error which displays:
Traceback (most recent call last):
File "<pyshell#51>", line 1, in <module>
print(op)
TypeError: 'NoneType' object is not callable

Could anybody help me with this?

Answer 1

just those 3 lines are ok. you can test them in playground.
the error must be due to some of your code elsewhere...

Answer 2

@Racris, please what's the result?

Answer 3

Yes,get the value: 2, thanks all, specially to @ifl✔️

Answer 4

Using while loop and value of op <2 or more loop will continue:

op = 1
while op < 2:
print (op)
op + = 1

Answer 5

@Amaras,value of op is incremental here as per the solution seeker is given ....if value of op has a range then we can stop it by giving range and operate it by " for loop".

Answer 6

print(op) ????

Answer 7

Sounds like you run python2.7 with a python3 Programm... Try 'print op' and see if the error persists

Answer 8

You can also just write 'from __future__ import print_function'... It's a workaround for print in different versions. Now you can use print as function although you in a 2.x Version

Answer 9

@Mushfiqur Rahman: the problem in this code is that the incrementation is AFTER the loop, thus the loop variable will never be incremented, thus there will be an infinite loop

Answer 10

Alright guys, here's the thing. There's no loop that's supposed to be here. What I wrote was a simple, beginner's code to increment the value stored in the variable. And the code worked with the solution given by @ifl.

Answer 11

@Racris right. Well... I guess we got sidetracked a bit there...

Answer 12

Not a problem. Help is always appreciated. :)

Answer 13

Result?... um... What are you talking about?

Answer 14

The value stored in variable op got incremented by one.

Answer 15

well... that was the point of the thingy, wasn't it? (thingy is the technical term for this ^^)

Answer 16

Yup.