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lines changed Original file line number Diff line number Diff line change @@ -132,8 +132,10 @@ class ParserWarning(Warning):
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Note: A fast-path exists for iso8601-formatted dates.
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infer_datetime_format : boolean, default False
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- If True and parse_dates is enabled for a column, attempt to infer
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- the datetime format to speed up the processing
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+ If parse_dates is enabled and this flag is set, pandas will attempt to infer
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+ the format of the datetime strings in the columns, and if it can be
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+ inferred, switch to a faster method of parsing them. In some cases this
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+ can increase the parsing speed by ~5-10x.
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keep_date_col : boolean, default False
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If True and parse_dates specifies combining multiple columns then
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keep the original columns.
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