Simplify open() call by removing default mode

The open() function opens files in read-only text mode by default. Drop
the mode argument to be slightly simpler and more idiomatic.

https://docs.python.org/3/library/functions.html#open

> The default mode is 'r' (open for reading text, synonym of 'rt').

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 76986044a..cfcbf5204 100644
--- a/setup.py
+++ b/setup.py
@@ -132,7 +132,7 @@ else:
                                                  domain + '.js'))
 
             for js_file, (locale, po_file) in zip(js_files, po_files):
-                with open(po_file, 'r') as infile:
+                with open(po_file) as infile:
                     catalog = read_po(infile, locale)
 
                 if catalog.fuzzy and not self.use_fuzzy: