Merge pull request #50 from pyexcel/dev

release 0.5.8

Author: chfw

.moban.yml

@@ -4,7 +4,7 @@ configuration:
   - "commons/templates"
   - "setupmobans/templates"
   - ".moban.d"
-  configuration: pyexcel_io.yaml
+  configuration: pyexcel-io.yml
 targets:
   - "docs/source/conf.py": "docs/source/conf.py"
   - setup.py: setup.py

.travis.yml

@@ -4,6 +4,7 @@ notifications:
   email: false
 python:
   - pypy-5.3.1
+  - 3.7-dev
   - 3.6
   - 3.5
   - 3.4

CHANGELOG.rst

@@ -1,6 +1,16 @@
 Change log
 ================================================================================
 
+0.5.8 - unreleased
+--------------------------------------------------------------------------------
+
+fixed
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+#. `#49 <https://github.com/pyexcel/pyexcel-io/issues/49>`_, support additional
+   options when detecting float values in csv format. default_float_nan,
+   ignore_nan_text
+
 0.5.7 - 02.05.2018
 --------------------------------------------------------------------------------
 

LICENSE

@@ -13,7 +13,7 @@ that the following conditions are met:
   and/or other materials provided with the distribution.
 
 * Neither the name of 'pyexcel-io' nor the names of the contributors
-  may not be used to endorse or promote products derived from this software
+  may be used to endorse or promote products derived from this software
   without specific prior written permission.
 
 THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
@@ -27,4 +27,4 @@ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGE.
+DAMAGE.

changelog.yml

@@ -1,6 +1,12 @@
 name: pyexcel-io
 organisation: pyexcel
 releases:
+- changes:
+  - action: fixed
+    details:
+    - '`#49`, support additional options when detecting float values in csv format. default_float_nan, ignore_nan_text'
+  date: unreleased
+  version: 0.5.8
 - changes:
   - action: fixed
     details:

docs/source/conf.py

@@ -4,50 +4,205 @@
     'format and to/from databases' +
     ''
 )
+# -*- coding: utf-8 -*-
+#
+# Configuration file for the Sphinx documentation builder.
+#
+# This file does only contain a selection of the most common options. For a
+# full list see the documentation:
+# http://www.sphinx-doc.org/en/master/config
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+# -- Project information -----------------------------------------------------
+
+project = u'pyexcel-io'
+copyright = u'2015-2018 Onni Software Ltd.'
+author = u'C.W.'
+
+# The short X.Y version
+version = u'0.5.8'
+# The full version, including alpha/beta/rc tags
+release = u'0.5.8'
+
+
+# -- General configuration ---------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+# needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
 extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.doctest',
     'sphinx.ext.intersphinx',
     'sphinx.ext.viewcode',
-    'sphinx.ext.autosummary'
 ]
-intersphinx_mapping = {
-    'pyexcel': ('http://pyexcel.readthedocs.io/en/latest/', None),
-}
+
+# Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+# source_suffix = ['.rst', '.md']
 source_suffix = '.rst'
+
+# The master toctree document.
 master_doc = 'index'
 
-project = u'pyexcel-io'
-copyright = u'2015-2018 Onni Software Ltd.'
-version = '0.5.7'
-release = '0.5.7'
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = 'en'
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = []
+
+# The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'
-html_theme = 'default'
 
 
-def setup(app):
-    app.add_stylesheet('theme_overrides.css')
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'alabaster'
 
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#
+# html_theme_options = {}
 
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# The default sidebars (for documents that don't match any pattern) are
+# defined by theme itself.  Builtin themes are using these templates by
+# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
+# 'searchbox.html']``.
+#
+# html_sidebars = {}
+
+
+# -- Options for HTMLHelp output ---------------------------------------------
+
+# Output file base name for HTML help builder.
 htmlhelp_basename = 'pyexcel-iodoc'
-latex_elements = {}
+
+
+# -- Options for LaTeX output ------------------------------------------------
+
+latex_elements = {
+    # The paper size ('letterpaper' or 'a4paper').
+    #
+    # 'papersize': 'letterpaper',
+
+    # The font size ('10pt', '11pt' or '12pt').
+    #
+    # 'pointsize': '10pt',
+
+    # Additional stuff for the LaTeX preamble.
+    #
+    # 'preamble': '',
+
+    # Latex figure (float) alignment
+    #
+    # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+#  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    ('index', 'pyexcel-io.tex',
-     'pyexcel-io Documentation',
-     'Onni Software Ltd.', 'manual'),
+    (master_doc, 'pyexcel-io.tex', u'pyexcel-io Documentation',
+     u'Onni Software Ltd.', 'manual'),
 ]
+
+
+# -- Options for manual page output ------------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'pyexcel-io',
-     'pyexcel-io Documentation',
-     [u'Onni Software Ltd.'], 1)
+    (master_doc, 'pyexcel-io', u'pyexcel-io Documentation',
+     [author], 1)
 ]
+
+
+# -- Options for Texinfo output ----------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+    (master_doc, 'pyexcel-io', u'pyexcel-io Documentation',
+     author, 'pyexcel-io', 'One line description of project.',
+     'Miscellaneous'),
+]
+
+
+# -- Options for Epub output -------------------------------------------------
+
+# Bibliographic Dublin Core info.
+epub_title = project
+
+# The unique identifier of the text. This can be a ISBN number
+# or the project homepage.
+#
+# epub_identifier = ''
+
+# A unique identification for the text.
+#
+# epub_uid = ''
+
+# A list of files that should not be packed into the epub file.
+epub_exclude_files = ['search.html']
+
+# -- Extension configuration -------------------------------------------------
+# -- Options for intersphinx extension ---------------------------------------
+
+# Example configuration for intersphinx: refer to the Python standard library.
+intersphinx_mapping = {'https://docs.python.org/': None}
+# TODO: html_theme not configurable upstream
+html_theme = 'default'
+
+
+def setup(app):
+    app.add_stylesheet('theme_overrides.css')
+
+
+
+# TODO: DESCRIPTION not configurable upstream
 texinfo_documents = [
     ('index', 'pyexcel-io',
      'pyexcel-io Documentation',
      'Onni Software Ltd.', 'pyexcel-io',
      DESCRIPTION,
      'Miscellaneous'),
 ]
+intersphinx_mapping.update({
+    'pyexcel': ('http://pyexcel.readthedocs.io/en/latest/', None),
+})

pyexcel_io.yaml renamed to pyexcel-io.yml

@@ -1,9 +1,9 @@
 overrides: "pyexcel.yaml"
 name: "pyexcel-io"
 nick_name: io
-version: 0.5.7
-current_version: 0.5.7
-release: 0.5.7
+version: 0.5.8
+current_version: 0.5.8
+release: 0.5.8
 dependencies:
   - ordereddict;python_version<"2.7"
   - lml==0.0.1

pyexcel_io/io.py

@@ -32,6 +32,9 @@ def iget_data(afile, file_type=None, **keywords):
     :param auto_detect_int: defaults to True
     :param auto_detect_datetime: defaults to True
     :param ignore_infinity: defaults to True
+    :param ignore_nan_text: various forms of 'NaN', 'nan' are ignored
+    :param default_float_nan: choose one form of 'NaN', 'nan'
+    :param pep_0515_off: turn off pep 0515. default to True.
     :param keywords: any other library specific parameters
     :returns: an ordered dictionary
     """

pyexcel_io/readers/csvr.py

@@ -131,6 +131,8 @@ def __init__(
         auto_detect_int=True,
         auto_detect_datetime=True,
         pep_0515_off=True,
+        ignore_nan_text=False,
+        default_float_nan=None,
         **keywords
     ):
         SheetReader.__init__(self, sheet, **keywords)
@@ -141,6 +143,8 @@ def __init__(
         self.__auto_detect_datetime = auto_detect_datetime
         self.__file_handle = None
         self.__pep_0515_off = pep_0515_off
+        self.__ignore_nan_text = ignore_nan_text
+        self.__default_float_nan = default_float_nan
 
     def get_file_handle(self):
         """ return me unicde reader for csv """
@@ -164,7 +168,9 @@ def __convert_cell(self, csv_cell_text):
             ret = service.detect_int_value(csv_cell_text, self.__pep_0515_off)
         if ret is None and self.__auto_detect_float:
             ret = service.detect_float_value(
-                csv_cell_text, self.__pep_0515_off
+                csv_cell_text, self.__pep_0515_off,
+                ignore_nan_text=self.__ignore_nan_text,
+                default_float_nan=self.__default_float_nan
             )
             shall_we_ignore_the_conversion = (
                 (ret in [float("inf"), float("-inf")])

pyexcel_io/service.py

@@ -39,7 +39,10 @@ def detect_date_value(cell_text):
     return ret
 
 
-def detect_float_value(cell_text, pep_0515_off=True):
+def detect_float_value(
+        cell_text, pep_0515_off=True,
+        ignore_nan_text=False,
+        default_float_nan=None):
     should_we_skip_it = (
         cell_text.startswith("0") and cell_text.startswith("0.") is False
     )
@@ -54,7 +57,19 @@ def detect_float_value(cell_text, pep_0515_off=True):
             return None
 
     try:
-        return float(cell_text)
+        if ignore_nan_text:
+            if cell_text.lower() == "nan":
+                return None
+            else:
+                return float(cell_text)
+        else:
+            if cell_text.lower() == "nan":
+                if cell_text == default_float_nan:
+                    return float("NaN")
+                else:
+                    return None
+            else:
+                return float(cell_text)
     except ValueError:
         return None