How to get data out of a def function in python

Question

Trying to simplify lots of repetitive reading and writing in a script of mine, and I can not figure out how to get data out of def readfile.

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Answer 1

• In Python, variables from inside a function are generally not accessible from the outside (Look up variable scoping).
• You can put a return statement at the end of a function to return variables (readvar in this case) (and you almost always should).
• Then you can assign the returned argument (readvar) to a new variable (e.g. rv).
• You can also give it the same name.
• Other Resources:
  • Python Scopes and Namespaces
  • Real Python: Defining Your Own Python Function

def writefile(FILE, DATA):
    file = open(FILE, "w")
    X = str(DATA) 
    file.write(X)
    file.close()
    
    
def readfile(FILE):
    file = open(FILE, "r")
    readvar = file.read()
    file.close()
    return readvar


rv = readfile("BAL.txt")
print(rv)