How I get a variable defined in for loop outside in the loop? -Python

Question

When I run this Python code I get a NameError. But in this code I'm trying to get a variable defined in a for loop (get) to use in outside of the loop. How can I use this variable (get) outside in for loop?

file = open("f:/py/price.txt", "r")

valRange = 0
cal = 0
totalCst = 0
itmCnt = 0
while (valRange < 10):
     idNumber = int(input("Enter Id number: "))
     for line in file:
          if line.startswith(str(idNumber)):
               get = line.split("=")[1]
          break
     quantity = int(input("Enter qantity: "))
     cal = quantity * int(get)
     totalCst += cal
     itmCnt += quantity

print (totalCst)

You don't need to anything extra. Maybe nothing ever gets assigned to it. — wwii
– wwii, Commented Feb 20, 2017 at 3:09

Marcos Dimitrio · Accepted Answer · 2017-02-25 13:48:23Z

1

Just initialize the variable before the loop. Also the break command was out of the if. Try:

file = open("f:/py/price.txt", "r")

valRange = 0
cal = 0
totalCst = 0
itmCnt = 0
while (valRange < 10):
     idNumber = int(input("Enter Id number: "))
     get = 0
     for line in file:
          if line.startswith(str(idNumber)):
               get = line.split("=")[1]
               break
     quantity = int(input("Enter qantity: "))
     cal = quantity * int(get)
     totalCst += cal
     itmCnt += quantity

print (totalCst)

edited Feb 25, 2017 at 13:48

Marcos Dimitrio

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answered Feb 20, 2017 at 3:12

spilafis

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2 Comments

yasmikash Over a year ago

It worked. But I've found some errors in my script. Anyway thanks :)

spilafis Over a year ago

Great! Please don't forget to mark the answer as the right answer.

John Kugelman · Accepted Answer · 2017-02-20 03:09:23Z

0

Indent the break more.

 for line in file:
      if line.startswith(str(idNumber)):
           get = line.split("=")[1]
           break

Also what if there are no matching lines? get won't have a value then. Make sure you skip the subsequent code if no lines matched.

answered Feb 20, 2017 at 3:09

John Kugelman

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