Python - How Can I Make A Function Parameter Global?

For example, I want to call a function LSE(n). And once I call LSE(5), I want n to be a callable by other functions as 5. I tried nesting the other functions accessing n inside LSE

Solution 1:

Between functions this can be achieved with the global keyword. This approach is usually frowned upon.

n = 0defLSE(value):
    global n
    n = value

defsecond_func():
   global n
   print(n)

trying this out:

>>>LSE(5)>>>second_func()
5

If you want to share values between functions, may I suggest encapsulating them in a class?

Solution 2:

"Is there anyways to do the global thing without changing the name? I.e. I want to take my parameter make it a global variable retaining the same name (as opposed to here where value and n are named differently)"

from: How to get the original variable name of variable passed to a function

"You can't. It's evaluated before being passed to the function. All you can do is pass it as a string."

What is doable is you can make your code always use a specific variable name, and within your function, declare it a global variable. That way you wouldnt even need to pass it as a parameter, but it would get affected every time you used the function; example:

def test_function ():

    global N

    N = N + 1

    print (N)

N = 5

test_function()
test_function()
test_function()

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