support python3

Author: garryyan

mars/build_ios.py

@@ -146,7 +146,7 @@ def main():
             build_ios(sys.argv[1])
             break
         else:
-            num = raw_input('Enter menu:\n1. Clean && build mars.\n2. Clean && build xlog.\n3. Gen iOS mars Project.\n4. Exit\n')
+            num = input('Enter menu:\n1. Clean && build mars.\n2. Clean && build xlog.\n3. Gen iOS mars Project.\n4. Exit\n')
             if num == '1':
                 build_ios()
                 break

mars/mars_utils.py

@@ -344,7 +344,7 @@ def gen_mars_revision_file(version_file_path, tag=''):
 ''' % (revision, path, url, build_time, tag)
 
     with open('%s/verinfo.h' % version_file_path, 'wb') as f:
-        f.write(contents)
+        f.write(contents.encode())
         f.flush()
 
     version_data = {