Python, regular expressions, why is this happening?

Question

Python

I have one code that looks for numbers from a file.

match = re.findall(r"\№[0-9]{6,}", f.read())
match1 = re.findall(r"\№[0-9]{6,}", f.read())
print(str(len(match)))
print(str(len(match1)))

The two variables are exactly the same, but why does match show 355, and match1 0, why is that?

Answer 1

so try:

txt = f.read()
match = re.findall(r"\№[0-9]{6,}", txt)
match1 = re.findall(r"\№[0-9]{6,}", txt)

print(str(len(match)))
print(str(len(match1)))