User input to call function

Question

I am trying to have the user input call a function.

My code:

class the_proccess():

    the_route = input("Which function do you want to use? \n\n 1) The first one. \n\n 2) The second one. \n\n 3) The first one and then the second one. \n\n Please enter the corresponding number and hit enter >>>>> ")

    if the_route == 1:
        first()
    elif the_route == 2:
        second()
    elif the_route == 3:
        first()
        second()

    def first():
        print("First function")

    def second():
        print("Second function")

However, when I select the option the process stops. I'm not quite sure what I am doing wrong and this is my first time trying to do something like this.

You have to define `first` and `second` before calling them. — internet_user, Jan 29 '18 at 13:29
Possible duplicate of [How can I read inputs as integers?](https://stackoverflow.com/questions/20449427/how-can-i-read-inputs-as-integers) — Chris_Rands, Jan 29 '18 at 13:29

Fra93 · Accepted Answer · 2018-01-29T13:57:20.683

3

Now this works as you want.

class the_proccess(object):

def first(self):
    print("First function")

def second(self):
    print("Second function")

def __init__(self):
    self.the_route = input("Which function do you want to use? \n\n 1) The first one. \n\n 2) The second one. \n\n 3) The first one and then the second one. \n\n Please enter the corresponding number and hit enter >>>>> ")

    if self.the_route == 1:
            self.first()
    elif self.the_route == 2:
            self.second()
    elif self.the_route == 3:
            self.first()
            self.second()

a = the_proccess();

edited Jan 29 '18 at 13:57

answered Jan 29 '18 at 13:55

Fra93

1,992
1
9
18

1

Thank you for this, what I did was `if the_route == str(1)` which does the job. Is your code more robust? – Maverick Jan 29 '18 at 13:57
The problem with your code is that it threw an error complaining about "first" and "second", which weren't defined at the moment of the call. – Fra93 Jan 29 '18 at 13:59
Yes I also changed the order around :) – Maverick Jan 29 '18 at 14:00
I actually need to use `str` on yours as well. – Maverick Jan 29 '18 at 14:11

score 0 · Answer 2 · answered May 17 '20 at 14:57

0

In this code, the variable the_route is a string because the input function returns a string. You could try

    if int(the_route) == 1:

answered May 17 '20 at 14:57

Anonymous

25
6

User input to call function

2 Answers2