Re: wordcount.py provided exercise solution not working?
Matthew Borkenhagen <[email protected]>
| Newsgroups | gmane.comp.python.tutor |
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| Message-ID | <CA+to6D2xMJQCeO2bcJSrb+_usCnVcFiV7fmmEOEMA=bEiauijQ@mail.gmail.com> |
Thank you Mats, that is very helpful. Is a file provided by Google or will I need to create one myself? (Just use a text editor like Notepad++? Save it with a .txt extension?) Matt Borkenhagen On Wed, Sep 20, 2023, 5:10 PM Mats Wichmann <[email protected]> wrote: > On 9/20/23 16:41, Matthew Borkenhagen wrote: > > Hello, > > > > In working through Google's Python Class ( > > https://developers.google.com/edu/python) I just ran the provided > solution > > from Google for the exercise on dicts and files: wordcount.py > > When I run this program while in the proper directory at the command > > prompt, the program only prints *this result*: > > > > *usage: ./wordcount.py {--count | --topcount} file* > > > > My question is this--Is this provided solution ever reading a file? > (What > > is the filename that it should be reading called? Where would this file > > be located? In the directory google-python-exercises\basic\solution or > > would I need to create a file myself for it to read in order to test the > > program?) > > The filename is whatever you tell it. But, apparently, you *have* to > select one of the options too (it's not "optional"). > > def main(): > if len(sys.argv) != 3: > print('usage: ./wordcount.py {--count | --topcount} file') > sys.exit(1) > > option = sys.argv[1] > filename = sys.argv[2] > > This says: if the script is not called with three arguments, print an > error message and quit. By convention, the name of the program you just > ran is sys.argv[0], so you have to supply two more arguments on the > command line. The first will be the option you selected, and the second > will be the filename to count the words in. > > > _______________________________________________ > Tutor maillist - [email protected] > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor > _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor