[Python] Regarding good coding practices, what is meant by "Useless return at end of function...

I'm using Spyder to create a web scraper, and things are moving smoothly so far. As a rookie, Spyder's Code Analysis function is something I find useful for improving the standard of my code. However, while I usually understand its instructions/recommendations, I've recently run into a bit of a blip. I'll post some sample code first:

def payments(): #### This is line 59 on the editor. Preceding it is another function with a a format similar to this one.
"""Obtains data on the weekly payments in the country"""
html = get(source["Payments"]).text
html = bs(html,"lxml")
location = "/home/oduduwa/Desktop/Python Projects/Financial Analyser/CBN Data/Payments.csv"
def file_check():
headings = [i.text for i in html.find_all(width="284")][:10]
headings.insert(0, "Date")
if isfile(location) is False:
with open(location,"w") as file_obj:
writer(file_obj).writerow(headings)
return
file_check()
file = open(location,"r").read()
dates = [i.text.strip()[8:] for i in html.find_all("th",colspan="2")]
values = [i.text.strip()[4:] for i in html.find_all(width="149") if i.text.strip()[4:]!=""]
values = array(values).reshape(int(len(values)/10),10)
values = insert(values,0,array(dates).transpose(),axis=1)[::-1]
for i in range(len(values)):
if values[0] not in file:
with open(location,"a+",newline=("\n")) as file_obj:
writer(file_obj).writerow(values)
return


The code runs fine and does everything it should. What I don't really understand, however, is Spyder's statement that there's a useless return call in the code block. Here's what it says specifically:



But, from what I gather, every function call is necessary in this coding block. What could I have missed?

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