global python without writing many times code example

Example 1: global python

"""
USING GLOBALS ARE A BAD IDEA, THE BEST WAY TO PERFORM AN ACTION WHICH NEEDS GLOBALS WOULD 
BE TO USE RETURN STATEMENTS. GLOBALS SHOULD ONLY EVER BE USED IN RARE OCCASIONS WHEN YOU
NEED THEM
"""

# allows you to modify a variable outside its class or function

EXAMPLE:
  
def test_function():
  global x
  x = 10

test_function()
print(f"x is equal to {x}") # returns x is equal to 10

Example 2: Traceback (most recent call last): File "main.py", line 3, in y = eval((x**3+2*x)/(x**4+3(x**2)+1)) TypeError: 'int' object is not callable

Traceback (most recent call last):
  File "main.py", line 3, in <module>
    y = eval((x**3+2*x)/(x**4+3(x**2)+1))
TypeError: 'int' object is not callable

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