Modernize Python 2 code to get ready for Python 3

deploy/delete_stale_projects.py

@@ -1,3 +1,4 @@
+from __future__ import print_function
 import shutil
 import os
 
@@ -11,11 +12,11 @@
     if slug not in slugs and slug.replace('_', '-') not in slugs:
         final.append(slug)
 
-print "To delete: %s" % len(final)
+print("To delete: %s" % len(final))
 
 for to_del in final:
     root = '/home/docs/checkouts/readthedocs.org'
-    print "Deleting " + to_del
+    print("Deleting " + to_del)
     shutil.rmtree('{root}/user_builds/{slug}'.format(root=root, slug=to_del), ignore_errors=True)
     shutil.rmtree('{root}/media/pdf/{slug}'.format(root=root, slug=to_del), ignore_errors=True)
     shutil.rmtree('{root}/media/epub/{slug}'.format(root=root, slug=to_del), ignore_errors=True)

deploy/flask-redirects.py

@@ -1,4 +1,5 @@
 """A Flask app for redirecting documentation from the root / URL."""
+from __future__ import print_function
 
 import json
 
@@ -17,7 +18,7 @@ def redirect_front():
 
     SUBDOMAIN = CNAME = False
 
-    print "Got request {host}".format(host=request.host)
+    print("Got request {host}".format(host=request.host))
     if PRODUCTION_DOMAIN in request.host:
         SUBDOMAIN = True
         slug = request.host.split('.')[0]
@@ -31,23 +32,23 @@ def redirect_front():
         path = "/home/docs/checkouts/readthedocs.org/public_cname_project/{cname}/metadata.json".format(cname=cname)
 
     try:
-        json_obj = json.load(file(path))
+        json_obj = json.load(open(path))
         version = json_obj['version']
         language = json_obj['language']
         single_version = json_obj['single_version']
-    except Exception, e:
-        print e
+    except Exception as e:
+        print(e)
 
     if single_version:
         if SUBDOMAIN:
             sendfile = "/user_builds/{slug}/translations/{language}/{version}/".format(slug=slug, language=language, version=version)
         elif CNAME:
             sendfile = "/public_cname_root/{cname}/".format(cname=cname, language=language, version=version)
-        print "Redirecting {host} to {sendfile}".format(host=request.host, sendfile=sendfile)
+        print("Redirecting {host} to {sendfile}".format(host=request.host, sendfile=sendfile))
         return make_response('', 303, {'X-Accel-Redirect': sendfile})
     else:
         url = '/{language}/{version}/'.format(language=language, version=version)
-        print "Redirecting {host} to {url}".format(host=request.host, url=url)
+        print("Redirecting {host} to {url}".format(host=request.host, url=url))
         return redirect(url)
 
 

deploy/nginx-smoke-test.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 """Check Nginx config on readthedocs.org."""
+from __future__ import print_function
 
 import sys
 import requests
@@ -66,15 +67,15 @@ def run_test(fn, *args):
     ret_value = fn(*args)
     result = 'ok' if ret_value else 'ERROR'
     url = args[0]
-    print "{url: <65} ...  {result}".format(url=url, result=result)
+    print("{url: <65} ...  {result}".format(url=url, result=result))
     return ret_value
 
 
 def header(msg):
     """Give each test a sexy header."""
-    print
-    print msg
-    print "-----------------------------"
+    print()
+    print(msg)
+    print("-----------------------------")
 
 
 def summary_results(num_tests, num_fails):
@@ -115,7 +116,7 @@ def main():
     for url, redirect in redirected_urls:
         run_test(redirected, url, redirect)
 
-    print summary_results(TESTS, FAILS)
+    print(summary_results(TESTS, FAILS))
 
     exit_code = 1 if (FAILS > 0) else 0
     return exit_code

readthedocs/doc_builder/python_environments.py

@@ -20,6 +20,11 @@
 
 log = logging.getLogger(__name__)
 
+try:
+    unicode        # Python 2
+except NameError:
+    unicode = str  # Python 3
+
 
 class PythonEnvironment(object):