How to read a CSV file from a URL with Python

Question

when I do curl to a API call link http   example com passkey wedsmdjsjmdd  curl  http   example com passkey wedsmdjsjmdd    I get the employee output data on a csv file format  like    Steve   421   0   421   2                           421   0   421   2    how can parse through this using python   I tried   import csv  cr   csv reader open  http   example com passkey wedsmdjsjmdd   rb    for row in cr      print row   but it didn t work and I got an error  http   example com passkey wedsmdjsjmdd No such file or directory   Thanks

User · Answer

I am also using this approach for csv files  Python 3 6 9   import csv import io import requests  r   requests get url  buff   io StringIO r text  dr   csv DictReader buff  for row in dr      print row

User · Answer

Using pandas it is very simple to read a csv file directly from a url  import pandas as pd data   pd read csv  https   example com passkey wedsmdjsjmdd     This will read your data in tabular format  which will be very easy to process

User · Answer

To increase performance when downloading a large file  the below may work a bit more efficiently   import requests from contextlib import closing import csv  url    http   download-and-process-csv-efficiently python csv   with closing requests get url  stream True   as r      reader   csv reader r iter lines    delimiter      quotechar          for row in reader            Handle each row here            print row      By setting stream True in the GET request  when we pass r iter lines   to csv reader    we are passing a generator to csv reader    By doing so  we enable csv reader   to lazily iterate over each line in the response with for row in reader   This avoids loading the entire file into memory before we start processing it  drastically reducing memory overhead for large files

User · Answer

This question is tagged python-2 x so it didn t seem right to tamper with the original question  or the accepted answer  However  Python 2 is now unsupported  and this question still has good google juice for  quot python csv urllib quot   so here s an updated Python 3 solution  It s now necessary to decode urlopen s response  in bytes  into a valid local encoding  so the accepted answer has to be modified slightly  import csv  urllib request  url    http   winterolympicsmedals com medals csv  response   urllib request urlopen url  lines    l decode  utf-8   for l in response readlines    cr   csv reader lines   for row in cr      print row   Note the extra line beginning with lines    the fact that urlopen is now in the urllib request module  and print of course requires parentheses  It s hardly advertised  but yes  csv reader can read from a list of strings  And since someone else mentioned pandas  here s a one-liner to display the CSV in a console-friendly output  python3 -c  import pandas df   pandas read csv  quot http   winterolympicsmedals com medals csv quot   print df to string       Yes  it s three lines  but you can copy-paste it as one command

User · Answer

You could do it with the requests module as well   url    http   winterolympicsmedals com medals csv  r   requests get url  text   r iter lines   reader   csv reader text  delimiter

User · Answer

what you were trying to do with the curl command was to download the file to your local hard drive HD   You however need to specify a path on HD  curl http   example com passkey wedsmdjsjmdd -o   example csv cr   csv reader open    example csv   r    for row in cr      print row

User · Answer

You need to replace open with urllib urlopen or urllib2 urlopen  e g  import csv import urllib2  url    http   winterolympicsmedals com medals csv  response   urllib2 urlopen url  cr   csv reader response   for row in cr      print row  This would output the following Year City Sport Discipline NOC Event Event gender Medal 1924 Chamonix Skating Figure skating AUT individual M Silver 1924 Chamonix Skating Figure skating AUT individual W Gold      The original question is tagged  quot python-2 x quot   but for a Python 3 implementation  which requires only minor changes  see below

User · Answer

import pandas as pd url  https   raw githubusercontent com juliencohensolal BankMarketing master rawData bank-additional-full csv  data   pd read csv url sep        use sep     for coma separation   data describe

[python] How to read a CSV file from a URL with Python?

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