Add conditional dependency on enum34 for Python 2.7

3 files changed, 8 insertions, 0 deletions

diff --git a/docs/requirements.txt b/docs/requirements.txt
index b50df7d1..b8cf9271 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,3 +2,5 @@ pyparsing
 six
 pyperclip
 contextlib2
+enum34
+subprocess32
diff --git a/setup.py b/setup.py
index 44268767..8107552d 100755
--- a/setup.py
+++ b/setup.py
@@ -71,6 +71,8 @@ EXTRAS_REQUIRE = {
     ":sys_platform=='win32'": ['pyreadline'],
     # Python 3.4 and earlier require contextlib2 for temporarily redirecting stderr and stdout
     ":python_version<'3.5'": ['contextlib2'],
+    # Python 3.3 and earlier require enum34 backport of enum module from Python 3.4
+    ":python_version<'3.4'": ['enum34'],
     # Python 2.7 also requires subprocess32
     ":python_version<'3.0'": ['subprocess32'],
 }
@@ -81,6 +83,8 @@ if int(setuptools.__version__.split('.')[0]) < 18:
         INSTALL_REQUIRES.append('pyreadline')
     if sys.version_info < (3, 5):
         INSTALL_REQUIRES.append('contextlib2')
+    if sys.version_info < (3, 4):
+        INSTALL_REQUIRES.append('enum34')
     if sys.version_info < (3, 0):
         INSTALL_REQUIRES.append('subprocess32')
 
diff --git a/tox.ini b/tox.ini
index 77a4ad69..1be182f4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ setenv =
 [testenv:py27]
 deps =
   codecov
+  enum34
   mock
   pyparsing
   pyperclip
@@ -28,6 +29,7 @@ commands =
 [testenv:py27-win]
 deps =
   codecov
+  enum34
   mock
   pyparsing
   pyperclip