Efficient way to access a mapping of identifiers in Python

Posted by sixbelo on Stack Overflow See other posts from Stack Overflow or by sixbelo
Published on 2010-06-05T12:08:49Z Indexed on 2010/06/05 12:12 UTC
Read the original article Hit count: 220

Filed under:

python

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database

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sqlite

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dictionary

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csv

I am writing an app to do a file conversion and part of that is replacing old account numbers with a new account numbers.

Right now I have a CSV file mapping the old and new account numbers with around 30K records. I read this in and store it as dict and when writing the new file grab the new account from the dict by key.

My question is what is the best way to do this if the CSV file increases to 100K+ records?

Would it be more efficient to convert the account mappings from a CSV to a sqlite database rather than storing them as a dict in memory?

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