Checking separate variables with a while loop

Question

I'm trying to check 4 separate variables for the exact same strings using separate variables with similar names. An example is below. The print functions are also an example, they're not my final goal.

from random import randint
example1 = randint(1,3)
example2 = randint(1,3)
example3 = randint(1,3)
example4 = randint(1,3)
if example1 == 1:
  print ("A")
elif example1 == 2:
  print ("C")
else:
  print ("M")

Can anyone suggest how I could repeat this area for all of the variables?

if example1 == 1:
  print ("A")
elif example1 == 2:
  print ("C")
else:
  print ("M")

Please post real code. randint(str(1,3)) gives a TypeError. What exactly are you trying to do there? — Daniel Roseman
– Daniel Roseman, Commented Sep 26, 2018 at 12:47
As a general rule, when you have "separate variables with similar names" (and similar values and semantic), you really want a list or a dict. — bruno desthuilliers
– bruno desthuilliers, Commented Sep 26, 2018 at 13:14

vash_the_stampede · Accepted Answer · 2018-09-26 13:17:08Z

2

Remove str from randint(str(1,3))

l = [example1, example2, example2, example4]

for i in l:
    if i == 1:
      print ("A")
    elif i == 2:
      print ("C")
    else:
      print ("M")

or

[print('A') if i == 1 else print('C') if i ==2 else print('M') for i in l]

C
C
C
A

edited Sep 26, 2018 at 13:17

answered Sep 26, 2018 at 12:59

vash_the_stampede

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Comments

Jack Taylor · Accepted Answer · 2018-09-26 13:03:35Z

0

You can use a for loop:

from random import randint
example1 = randint(1,3)
example2 = randint(1,3)
example3 = randint(1,3)
example4 = randint(1,3)
for example in (example1, example2, example3, example4):
  if example == 1:
    print ("A")
  elif example == 2:
    print ("C")
  else:
    print ("M")

The (example1, example2, example3, example4) part creates a tuple containing all of the four variables. The for example in ... part then repeats your desired code for each variable, with the example variable taking on the value of each different variable each time round the loop.

For more on for loops, you can take a look at the official tutorial.

edited Sep 26, 2018 at 13:03

answered Sep 26, 2018 at 12:48

Jack Taylor

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3 Comments

Sreeram TP Over a year ago

@JackTaylor randint(str(1,3)) will thow an error as str can't be passed with more than 1 element

Jack Taylor Over a year ago

Thanks for the warning - should have tested that bit out first. Fixed now.

Kedian Over a year ago

Thanks, this is exactly what I needed, just worded differently.

Niladri Basu · Accepted Answer · 2018-09-27 07:21:47Z

0

A more scalable approach to your problem:

from random import randint
example1 = randint(1,3)
example2 = randint(1,3)
example3 = randint(1,3)
example4 = randint(1,3)

int_char_map = {1: "A", 2: "C", 3: "M"}

examples = [example1, example2, example2, example4]

print(examples)

for example in examples:
    print(int_char_map[example])

edited Sep 27, 2018 at 7:21

answered Sep 27, 2018 at 7:14

Niladri Basu

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