Incrementing a variable by condition-CodePudding

What am I doing wrong? I would like to use count as a global variable.

count = 0 
card = low

def running_count ():
    if card == low:
        count = count 1
    elif card == mid:
        count = count
    elif card == high:
        count = count-1

print(count)

I get 0 as the result

CodePudding user response：

count = 0 
card = 'low'

def running_count(card):
  global count
  if card == 'low':
      count = count 1
  elif card == 'mid':
      count = count
  elif card == 'high':
      count = count-1

running_count(card)
print(count)
#1
running_count(card)
print(count)
#2

But it safer to not use global if you don't have to.

CodePudding user response：

You should try to avoid using global variables where possible.

card should be a string, which you compare to a string inside your function.

You need to call the function you have defined so it gets exectued.

This is an example of how you could do it.

count = 0 
card = 'low'

def running_count(count, card):
    if card == 'low':
        count = count 1
    elif card == 'mid':
        count = count
    elif card == 'high':
        count = count-1
    return count
    
count = running_count(count, card)
print(count)

Also you don't really need

elif card == 'mid':
   count = count

since you don't change the value of count, you could simply skip this step, because all value besides 'low' and 'high' don't change count.

I hope this helps