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Object-oriented pandas DataFrame mapper.

Project description

THIS IS EXPERIMENTAL.

Requirements

  • Python 3.5+

  • Pandas 0.20.0+

Installation

Install DataFrame Mapper via pip:

$ pip install dataframe-mapper

Example

Simple DataFrame Mapper example:

from dfmapper import DataFrameMapper, IntColumn, StrColumn

class UserDfm(DataFrameMapper):

    id = IntColumn(min=1, nullable=False)
    username = StrColumn(max_length=30, nullable=False)
    profile = StrColumn()

    def find_by_id(self, id):
        return self.df[self.df.id == id]

user_dfm = UserDfm({
    "id": [1, 2, 3],
    "username": ["Bessie Bennett", "Sandra Matthews", "Jessie Bates"],
    "profile": ["BLAH BLAH BLAH", "PITH PITH PITH", None]
})

user_dfm.is_valid()
#: True

user_dfm.find_by_id(1)
#:    id username       profile
#: 0  1  Bessie Bennett BLAH BLAH BLAH

License

DataFrame Mapper is licensed under MIT License. See LICENSE for more information.

Project details


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