From 3a12c065337709a3add022664ed98db06b5d2aa5 Mon Sep 17 00:00:00 2001 From: Winterflower Date: Tue, 1 Sep 2015 21:43:28 +0100 Subject: [PATCH] DOC:10700 add note regarding 0-len string --- doc/source/io.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/doc/source/io.rst b/doc/source/io.rst index 70e7154493ccf..ded314229225c 100644 --- a/doc/source/io.rst +++ b/doc/source/io.rst @@ -731,7 +731,9 @@ the corresponding equivalent values will also imply a missing value (in this cas To completely override the default values that are recognized as missing, specify ``keep_default_na=False``. The default ``NaN`` recognized values are ``['-1.#IND', '1.#QNAN', '1.#IND', '-1.#QNAN', '#N/A','N/A', 'NA', -'#NA', 'NULL', 'NaN', '-NaN', 'nan', '-nan']``. +'#NA', 'NULL', 'NaN', '-NaN', 'nan', '-nan']``. Although a 0-length string +``''`` is not included in the default ``NaN`` values list, it is still treated +as a missing value. .. code-block:: python