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Authentication utilities to accompany `twitterclient`.
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Convenience function for authentication
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Methods for authenticating with Twitter.
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Read OAuth credentials from a text file.
File format for OAuth 1::
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oauth_token_secret=OAUTH_TOKEN_SECRET
File format for OAuth 2::
app_key=YOUR_APP_KEY
app_secret=YOUR_APP_SECRET
access_token=ACCESS_TOKEN
:param str file_name: File containing credentials. ``None`` (default) reads
data from `TWITTER/'credentials.txt'`
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credentials file.
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:param str pth: The pathname of the directory where files of tweets should be written
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