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A tiny library for handling CSV files.

Project description

incisive is a tiny library for handling CSV in Python. It’s a wrapper for the csv module.


  • You can read a csv file like this:

    >>> iris = read_csv("data/iris.csv")
    {'petal_length': 1.4,
     'petal_width': 0.2,
     'sepal_length': 5.1,
     'sepal_width': 3.5,
     'species': 'setosa'}

read_csv returns a generator. Note that incisive, by default, tries to guess the type of the columns.

  • Writing a CSV file can be done in two ways:
  1. with a list of dictionaries:

    >>> data = [{'name': 'Lancelot', 'actor': 'John Cleese', 'color': 'blue'},
               {'name': 'Galahad', 'actor': 'Michael Palin', 'color': 'yellow'}]
    >>> write_csv('bridge.csv', ('name', 'actor', 'color'), data=data)

(the keys are the field names of the CSV file.)

  1. or with just a list of rows:

    >>> rows = [('Lancelot', 'John Cleese', 'blue'),
            ('Galahad', 'Michael Palin', 'yellow')]
    >>> write_csv('bridge.csv', ('name', 'actor', 'color'), rows=rows)

Note that this second method requires that your field names correspond exactly to the elements of your rows.


  • Simple API
  • Guess the types when it’s possible
  • Accept functions to specify the types

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