Changing Integer Python [duplicate]

Question

Hey guys just a quick and simple question. I have a function in which I need to add numbers per action. I have already written a script however, it resets to 0 every time. I already know that the mistake is declaring 0 every time however I do not know how to fix this. ~ Here is an example to help:

valid = 0
connection_error = 0
def seesite():
  global valid
  global connection_error
  valid = 0
  connection_error = 0
  try:
    requests.get("https://google.com")
    valid += 1
    print(f"Valid requests: {valid}")
  except:
    error += 1
    print(f"Invalid requests: {invalid}")

~ I would like to conduct this however without resetting the value. Any ideas?

That's not valid python. Can you create an example with actual code instead of pseudocode? — Jan Christoph Terasa
– Jan Christoph Terasa, Commented May 14, 2020 at 5:50
the best way would be to keep track of the total outside the function — juanpa.arrivillaga
– juanpa.arrivillaga, Commented May 14, 2020 at 5:51
Try declaring value as global variable OR retuen value and pass it in function every time. — ghostshelltaken
– ghostshelltaken, Commented May 14, 2020 at 5:51

Jan Christoph Terasa · Accepted Answer · 2020-05-14 06:05:23Z

1

Use numfunc.value and define numfunc.value after the function definition. This emulates static function variables:

def numfunc():
    print(numfunc.value)
    numfunc.value += 1
numfunc.value = 0

numfunc() # 0
numfunc() # 1

Note that this has no real advantage over global variables, though. It just puts the variable into the namespace of the function instead of the global namespace, with the same accessibility (since there is no "private" or "protected" in Python).

edited May 14, 2020 at 6:05

answered May 14, 2020 at 5:55

Jan Christoph Terasa

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2 Comments

Jan Christoph Terasa Over a year ago

I copied and pasted those exact line into my interpreter, and they are fine.

xnarf Over a year ago

Yes so sorry! Forgot to add the function identifiers facepalm

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