Merge pull request #241 from zooniverse/fix-open-Umode

Remove deprecated U mode in file open

README.md

@@ -6,9 +6,10 @@ the API behind [the Zooniverse](https://www.zooniverse.org/).
 ## Installation
 
 The Panoptes CLI is written in Python, so in order to install it you will need
-to install either Python 2 or Python 3, along with `pip`. macOS and Linux
-already come with Python installed, so run this to see if you already have
-everything you need:
+to install Python 3 along with `pip`. Please note: while still compatible with
+Python 2.7, we have ended support for use of the CLI with this deprecated version.
+macOS and Linux already come with Python installed, so run this to see if you 
+already have everything you need:
 
 ```
 $ python --version && pip --version
@@ -17,7 +18,8 @@ $ python --version && pip --version
 If you see an error like `python: command not found` or `pip: command not found`
 then you will need to install this:
 
-- [Python installation](https://wiki.python.org/moin/BeginnersGuide/Download)
+- [Python installation](https://wiki.python.org/moin/BeginnersGuide/Download) 
+  (or [Miniconda installation](https://docs.conda.io/en/latest/miniconda.html))
 - [Pip installation](https://pip.pypa.io/en/stable/installing/)
 
 Once these are installed you can just use `pip` to install the latest release of

panoptes_cli/commands/subject_set.py

@@ -311,7 +311,7 @@ def get_index_fields(headers):
     if not resumed_upload:
         subject_rows = []
         for manifest_file in upload_state['manifest_files']:
-            with open(manifest_file, 'U') as manifest_f:
+            with open(manifest_file) as manifest_f:
                 file_root = os.path.dirname(manifest_file)
                 r = csv.reader(manifest_f, skipinitialspace=True)
                 headers = next(r)