use python3 safe api

disabled python 3 for gclient

script/deps.py

@@ -11,9 +11,9 @@ import sys
 import tarfile
 import tempfile
 import time
-import urllib2
 import zipfile
 
+from six.moves import urllib
 
 def DownloadUrl(url, output_file):
     """Download url into output_file."""
@@ -26,7 +26,7 @@ def DownloadUrl(url, output_file):
         try:
             sys.stdout.write('Downloading %s ' % url)
             sys.stdout.flush()
-            response = urllib2.urlopen(url)
+            response = urllib.request.urlopen(url)
             total_size = int(response.info().getheader('Content-Length').strip())
             bytes_done = 0
             dots_printed = 0
@@ -41,13 +41,13 @@ def DownloadUrl(url, output_file):
                 sys.stdout.flush()
                 dots_printed = num_dots
             if bytes_done != total_size:
-                raise urllib2.URLError("only got %d of %d bytes" % (bytes_done, total_size))
+                raise urllib.error.URLError("only got %d of %d bytes" % (bytes_done, total_size))
             print ' Done.'
             return
-        except urllib2.URLError as e:
+        except urllib.error.URLError as e:
             sys.stdout.write('\n')
             print e
-            if num_retries == 0 or isinstance(e, urllib2.HTTPError) and e.code == 404:
+            if num_retries == 0 or isinstance(e, urllib.error.HTTPError) and e.code == 404:
                 raise e
             num_retries -= 1
             print 'Retrying in %d s ...' % retry_wait_s

script/download_rust_deps.py

@@ -5,14 +5,16 @@
 
 """Script to download rust_deps."""
 
+
 import argparse
 import os
 import re
 import subprocess
 import sys
-import urllib2
 import pipes
 
+from six.moves import urllib
+
 import deps
 from rust_deps_config import RUST_DEPS_PACKAGES_URL, RUST_DEPS_PACKAGE_VERSION
 
@@ -56,7 +58,7 @@ def download_and_unpack_rust_deps(platform):
 
     try:
         deps.DownloadAndUnpack(url, RUSTUP_PATH)
-    except urllib2.URLError:
+    except urllib.error.URLError:
         print('Failed to download Rust deps: %s' % url)
         print('Exiting.')
         sys.exit(1)