1 files changed, 6 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index f56555db..aea5ab92 100755
--- a/setup.py
+++ b/setup.py
@@ -62,9 +62,15 @@ Topic :: Software Development :: Libraries :: Python Modules
 """.splitlines())))
 
 INSTALL_REQUIRES = ['pyparsing >= 2.0.1', 'pyperclip', 'six']
+
+# Windows also requires pyreadline to ensure tab completion works
 if sys.platform.startswith('win'):
     INSTALL_REQUIRES += ['pyreadline']
 
+# Python 2.7 also requires contextlib2 for temporarily redirecting stdout and stderr and subprocess32
+if sys.version_info < (3, 0):
+    INSTALL_REQUIRES += ['contextlib2', 'subprocess32']
+
 # unittest.mock was added in Python 3.3.  mock is a backport of unittest.mock to all versions of Python
 TESTS_REQUIRE = ['mock', 'pytest']
 DOCS_REQUIRE = ['sphinx', 'sphinx_rtd_theme', 'pyparsing', 'pyperclip', 'six']