python - How can i remove all extra characters from list of strings to convert to ints -


hi i'm pretty new programming , python, , first post, apologize poor form.

i scraping website's download counts , receiving following error when attempting convert list of string numbers integers sum. valueerror: invalid literal int() base 10: '1,015'

i have tried .replace() not seem doing anything.

and tried build if statement take commas out of string contains them: does python have string contains substring method?

here's code:

    downloadcount = pagehtml.xpath('//li[@class="download"]/text()')     downloadcount_clean = []      download in downloadcount:         downloadcount_clean.append(str.strip(download))      item in downloadcount_clean:         if "," in item:             item.replace(",", "")     print(downloadcount_clean)      downloadcount_clean = map(int, downloadcount_clean)     total = sum(downloadcount_clean)

strings not mutable in python. when call item.replace(",", ""), method returns want, not stored anywhere (thus not in item).

edit :

i suggest :

for in range(len(downloadcount_clean)):     if "," in downloadcount_clean[i]:         downloadcount_clean[i] = downloadcount_clean[i].replace(",", "")

second edit :

for bit more simplicity and/or elegance :

for index,value in enumerate(downloadcount_clean):     downloadcount_clean[index] = int(value.replace(",", ""))

-

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