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Groups > comp.lang.python > #107654
| From | Peter Otten <__peter__@web.de> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: how to create a dictionary from csv file? |
| Date | 2016-04-26 16:40 +0200 |
| Organization | None |
| Message-ID | <mailman.109.1461681647.32212.python-list@python.org> (permalink) |
| References | <246c571e-1793-4aa6-9405-19d7a1355598@googlegroups.com> <nfnul6$du2$1@ger.gmane.org> |
+dime+ wrote:
> I am learning python.
>
> if I have a csv file, like this
> banana,4.0
> apple,3.5
> orange,3.0
>
> Can anyone show me how to read the csv file line by line and then create a
> dictionary to contain these keys and values?
Below is a spoiler, but learning Python is more fun and you'll see success
sooner when you try to come up with a solution yourself, present it here (or
on the tutor mailing list) and let us fill the gaps or suggest improvements.
>>> import csv
>>> with open("fruit.csv") as f:
... lookup = {k: float(v) for k, v in csv.reader(f)}
...
>>> lookup
{'orange': 3.0, 'apple': 3.5, 'banana': 4.0}
>>> 2*lookup["banana"] + 3*lookup["orange"]
17.0
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how to create a dictionary from csv file? "+dime+" <donald.ng@gmail.com> - 2016-04-26 07:18 -0700
Re: how to create a dictionary from csv file? Peter Otten <__peter__@web.de> - 2016-04-26 16:40 +0200
Re: how to create a dictionary from csv file? justin walters <walters.justin01@gmail.com> - 2016-04-26 07:51 -0700
Re: how to create a dictionary from csv file? Tim Chase <python.list@tim.thechases.com> - 2016-04-26 09:36 -0500
Re: how to create a dictionary from csv file? Hasan Diwan <hasandiwan+usenet@gmail.com> - 2016-04-27 00:36 +0000
Re: how to create a dictionary from csv file? jfong@ms4.hinet.net - 2016-04-26 19:42 -0700
Re: how to create a dictionary from csv file? Sibylle Koczian <nulla.epistola@web.de> - 2016-04-27 11:10 +0200
Re: how to create a dictionary from csv file? Peter Otten <__peter__@web.de> - 2016-04-27 11:31 +0200
Re: how to create a dictionary from csv file? Sibylle Koczian <nulla.epistola@web.de> - 2016-04-27 17:37 +0200
Re: how to create a dictionary from csv file? Sibylle Koczian <nulla.epistola@web.de> - 2016-04-27 17:37 +0200
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