:wheel_chair: better error message. fix #68

.travis.yml

@@ -1,3 +1,4 @@
+
 sudo: false
 dist: xenial
 language: python

CHANGELOG.rst

@@ -1,6 +1,15 @@
 Change log
 ================================================================================
 
+0.5.17 - 04.04.2019
+--------------------------------------------------------------------------------
+
+updated
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+#. `#68 <https://github.com/pyexcel/pyexcel-io/issues/68>`_: Raise IOError when
+   the data file does not exist
+
 0.5.16 - 19.03.2019
 --------------------------------------------------------------------------------
 

changelog.yml

@@ -1,6 +1,12 @@
 name: pyexcel-io
 organisation: pyexcel
 releases:
+- changes:
+  - action: updated
+    details:
+    - '`#68`: Raise IOError when the data file does not exist'
+  version: 0.5.17
+  date: 04.04.2019
 - changes:
   - action: updated
     details:

docs/source/conf.py

@@ -26,9 +26,9 @@ project = 'pyexcel-io'
 copyright = 'copyright 2015-2019 Onni Software Ltd.'
 author = 'Onni Software Ltd.'
 # The short X.Y version
-version = '0.5.16'
+version = '0.5.17'
 # The full version, including alpha/beta/rc tags
-release = '0.5.16'
+release = '0.5.17'
 
 # -- General configuration ---------------------------------------------------
 

pyexcel-io.yml

@@ -2,10 +2,10 @@ overrides: "pyexcel.yaml"
 project: "pyexcel-io"
 name: pyexcel-io
 nick_name: io
-version: 0.5.16
-current_version: 0.5.16
+version: 0.5.17
+current_version: 0.5.17
 copyright_year: 2015-2019
-release: 0.5.16
+release: 0.5.17
 dependencies:
   - ordereddict;python_version<"2.7"
   - lml>=0.0.4

pyexcel_io/io.py

@@ -7,11 +7,13 @@
     :copyright: (c) 2014-2017 by Onni Software Ltd.
     :license: New BSD License, see LICENSE for more details
 """
+import os
 from types import GeneratorType
 import warnings
 
 from pyexcel_io._compact import isstream, PY2
 from pyexcel_io.plugins import READERS, WRITERS
+from pyexcel_io.exceptions import NoSupportingPluginFound
 import pyexcel_io.constants as constants
 
 
@@ -182,7 +184,15 @@ def load_data(
             except AttributeError:
                 raise Exception("file_name should be a string type")
 
-    reader = READERS.get_a_plugin(file_type, library)
+    try:
+        reader = READERS.get_a_plugin(file_type, library)
+    except NoSupportingPluginFound:
+        if file_name:
+            if not os.path.exists(file_name):
+                raise IOError("%s does not exist" % file_name)
+        else:
+            raise
+
     if file_name:
         reader.open(file_name, **keywords)
     elif file_content:

setup.py

@@ -29,15 +29,15 @@ except (ValueError, UnicodeError, locale.Error):
 
 NAME = 'pyexcel-io'
 AUTHOR = 'C.W.'
-VERSION = '0.5.16'
-EMAIL = 'wangc_2011@hotmail.com'
+VERSION = '0.5.17'
+EMAIL = 'info@pyexcel.org'
 LICENSE = 'New BSD'
 DESCRIPTION = (
     'A python library to read and write structured data in csv, zipped csv' +
     'format and to/from databases'
 )
 URL = 'https://github.com/pyexcel/pyexcel-io'
-DOWNLOAD_URL = '%s/archive/0.5.16.tar.gz' % URL
+DOWNLOAD_URL = '%s/archive/0.5.17.tar.gz' % URL
 FILES = ['README.rst', 'CHANGELOG.rst']
 KEYWORDS = [
     'python',
@@ -81,8 +81,8 @@ EXTRAS_REQUIRE = {
 # You do not need to read beyond this line
 PUBLISH_COMMAND = '{0} setup.py sdist bdist_wheel upload -r pypi'.format(
     sys.executable)
-GS_COMMAND = ('gs pyexcel-io v0.5.16 ' +
-              "Find 0.5.16 in changelog for more details")
+GS_COMMAND = ('gs pyexcel-io v0.5.17 ' +
+              "Find 0.5.17 in changelog for more details")
 NO_GS_MESSAGE = ('Automatic github release is disabled. ' +
                  'Please install gease to enable it.')
 UPLOAD_FAILED_MSG = (

tests/test_io.py

@@ -24,6 +24,11 @@ def test_force_file_type():
     eq_(expected, data[test_file])
 
 
+@raises(IOError)
+def test_invalid_file():
+    load_data('/something/does/not/exist')
+
+
 @raises(IOError)
 def test_no_valid_parameters():
     load_data()
@@ -84,7 +89,7 @@ def test_write_xlsx_data_to_memory():
         eq_(str(e), msg)
 
 
-@raises(exceptions.NoSupportingPluginFound)
+@raises(IOError)
 def test_load_unknown_data():
     get_data("test.unknown")
 
@@ -109,11 +114,6 @@ def test_write_xlsx_data():
     get_data("test.xlsx")
 
 
-@raises(exceptions.NoSupportingPluginFound)
-def test_write_unknown_data():
-    get_data("test.unknown")
-
-
 @raises(Exception)
 def test_writer_csvz_data_from_memory():
     if not PY2: