CODEWITHSUNDEEP
python
Eric Martin
Eric Martin

Reputation: 1

Cancel next input prompt

How do I make it so that if the input is '!', it does not wait for the valueInput and immediately prints the dictionary?

itemInput = input()

valueInput = int(input())
while itemInput != '!':
    if itemInput in groceryDict.keys():
        groceryDict[itemInput] += valueInput
    else:
        groceryDict[itemInput] = valueInput
    itemInput = input()
    valueInput = int(input())
else:
    print(groceryDict)

for example, if someone is done entering their list, they would enter '!', but the dict wouldn't print as it is waiting to ask for the valueInput again, and the user would have to enter a value before the dict prints. So where would I properly put the valueInput and the itemInput prompt in my code?

Upvotes: 0

Views: 113

Answers (4)

MrCont
MrCont

Reputation: 71

A break may be of help:

if itemInput == '!':
    print(groceryDict) 
    break

Upvotes: 0

AnPla
AnPla

Reputation: 32

You can try the following:

groceryDict = {}
while True:
  itemInput = input("Enter Item:")
  if itemInput == "!":
    break
  valueInput = int(input("Enter Value for Item:"))
  if itemInput in groceryDict.keys():
    groceryDict[itemInput] += valueInput
  else:
    groceryDict[itemInput] = valueInput

print(groceryDict)

The loop will contines until the if statement becomes True and the breakleads to ending it. Next place the if statement directly behind the input for the item. This way the user must no longer enter a value befor the loop ends.

And be smart to the user, tell him/her/it what to enter. ;-)

Upvotes: 0

David Meu
David Meu

Reputation: 1545

Just break

itemInput = input() 
valueInput = int(input())
while True:
    if itemInput in groceryDict.keys():
        groceryDict[itemInput] += valueInput
    else:
        groceryDict[itemInput] = valueInput
    itemInput = input()
    if itemInput == '!':
        print(groceryDict)
        break
    valueInput = int(input())

Upvotes: 0

Serge Ballesta
Serge Ballesta

Reputation: 148890

You should only input a value after controlling the item name:

itemInput = input()

while itemInput != '!':
    valueInput = int(input())
    if itemInput in groceryDict.keys():
        groceryDict[itemInput] += valueInput
    else:
        groceryDict[itemInput] = valueInput
    itemInput = input()

print(groceryDict)

Or to have only one input for items:

itemInput = input()

while True:
    itemInput = input().strip()   # ignore leading or ending blank characters
    if itemInput == '!': break
    valueInput = int(input())
    if itemInput in groceryDict.keys():
        groceryDict[itemInput] += valueInput
    else:
        groceryDict[itemInput] = valueInput

print(groceryDict)

Upvotes: 1

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