global variable impact

withmain.py

def main():
	

	from time import time as t
	
	
	t1=t()
	
	
	for i in range(1_000_000_000):
	    if i == -1:
	        break
	        
	print(t()-t1)
	
	
	t1=t()
	MAGIC_NUMBER = -1
	
	for i in range(1_000_000_000):
	    if i == MAGIC_NUMBER:
	        break
	
	print(t()-t1)
	
	
	t1=t()
	def number_matches(num: int) -> bool:
	    return num == -1
	
	for i in range(1_000_000_000):
	    if number_matches(i):
	        break
	        
	        
	print(t()-t1)
	
main()

withoutmain.py

from time import time as t


t1=t()


for i in range(1_000_000_000):
    if i == -1:
        break
        
print(t()-t1)


t1=t()
MAGIC_NUMBER = -1

for i in range(1_000_000_000):
    if i == MAGIC_NUMBER:
        break

print(t()-t1)


t1=t()
def number_matches(num: int) -> bool:
    return num == -1

for i in range(1_000_000_000):
    if number_matches(i):
        break
        
        
print(t()-t1)