Improve print statement compatibility with Python3

python/servo/command_base.py

@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import print_function
+
 from errno import ENOENT as NO_SUCH_FILE_OR_DIRECTORY
 from glob import glob
 import shutil
@@ -350,15 +352,15 @@ def call_rustup_run(self, args, **kwargs):
                 version_line = subprocess.check_output(["rustup" + BIN_SUFFIX, "--version"])
             except OSError as e:
                 if e.errno == NO_SUCH_FILE_OR_DIRECTORY:
-                    print "It looks like rustup is not installed. See instructions at " \
-                          "https://github.com/servo/servo/#setting-up-your-environment"
-                    print
+                    print("It looks like rustup is not installed. See instructions at "
+                          "https://github.com/servo/servo/#setting-up-your-environment")
+                    print()
                     return 1
                 raise
             version = tuple(map(int, re.match("rustup (\d+)\.(\d+)\.(\d+)", version_line).groups()))
             if version < (1, 11, 0):
-                print "rustup is at version %s.%s.%s, Servo requires 1.11.0 or more recent." % version
-                print "Try running 'rustup self update'."
+                print("rustup is at version %s.%s.%s, Servo requires 1.11.0 or more recent." % version)
+                print("Try running 'rustup self update'.")
                 return 1
             toolchain = self.toolchain()
             if platform.system() == "Windows":

python/servo/lints/wpt_lint.py

@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import print_function
+
 import os
 import sys
 
@@ -20,7 +22,7 @@ class Lint(LintRunner):
     def _get_wpt_files(self, suite):
         working_dir = os.path.join(WPT_PATH, suite, '')
         file_iter = self.get_files(working_dir, exclude_dirs=[])
-        print '\nRunning the WPT lint on %s...' % working_dir
+        print('\nRunning the WPT lint on %s...' % working_dir)
         for f in file_iter:
             if filter_file(f):
                 yield f[len(working_dir):]

python/servo/mutation/mutator.py

@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import print_function
+
 import fileinput
 import re
 import random
@@ -28,7 +30,7 @@ def init_variables(if_blocks):
 def deleteStatements(file_name, line_numbers):
     for line in fileinput.input(file_name, inplace=True):
         if fileinput.lineno() not in line_numbers:
-            print line.rstrip()
+            print(line.rstrip())
 
 
 class Strategy:
@@ -48,7 +50,7 @@ def mutate(self, file_name):
             for line in fileinput.input(file_name, inplace=True):
                 if fileinput.lineno() == mutation_line_number:
                     line = re.sub(self._replace_strategy['regex'], self._replace_strategy['replaceString'], line)
-                print line.rstrip()
+                print(line.rstrip())
             return mutation_line_number
 
 

python/tidy/servo_tidy/tidy.py

@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import print_function
+
 import contextlib
 import fnmatch
 import imp
@@ -514,7 +516,7 @@ def check_manifest_dirs(config_file, print_text=True):
         lines = conf_file.splitlines(True)
 
     if print_text:
-        print '\rChecking the wpt manifest file...'
+        print('\rChecking the wpt manifest file...')
 
     p = parser.parse(lines)
     paths = rec_parse(wpt_path("web-platform-tests"), p)
@@ -908,7 +910,7 @@ def check_config_file(config_file, print_text=True):
         lines = conf_file.splitlines(True)
 
     if print_text:
-        print '\rChecking the config file...'
+        print('\rChecking the config file...')
 
     config_content = toml.loads(conf_file)
     exclude = config_content.get("ignore", {})
@@ -995,7 +997,7 @@ def parse_config(config_file):
 
 def check_directory_files(directories, print_text=True):
     if print_text:
-        print '\rChecking directories for correct file extensions...'
+        print('\rChecking directories for correct file extensions...')
     for directory, file_extensions in directories.items():
         files = sorted(os.listdir(directory))
         for filename in files:
@@ -1015,7 +1017,7 @@ def collect_errors_for_files(files_to_check, checking_functions, line_checking_f
     if not has_element:
         raise StopIteration
     if print_text:
-        print '\rChecking files for tidiness...'
+        print('\rChecking files for tidiness...')
 
     for filename in files_to_check:
         if not os.path.exists(filename):
@@ -1037,7 +1039,7 @@ def collect_errors_for_files(files_to_check, checking_functions, line_checking_f
 
 def get_dep_toml_files(only_changed_files=False):
     if not only_changed_files:
-        print '\nRunning the dependency licensing lint...'
+        print('\nRunning the dependency licensing lint...')
         for root, directories, filenames in os.walk(".cargo"):
             for filename in filenames:
                 if filename == "Cargo.toml":
@@ -1136,11 +1138,11 @@ def scan(only_changed_files=False, progress=True, stylo=False):
     error = None
     for error in errors:
         colorama.init()
-        print "\r\033[94m{}\033[0m:\033[93m{}\033[0m: \033[91m{}\033[0m".format(*error)
+        print("\r\033[94m{}\033[0m:\033[93m{}\033[0m: \033[91m{}\033[0m".format(*error))
 
-    print
+    print()
     if error is None:
         colorama.init()
-        print "\033[92mtidy reported no errors.\033[0m"
+        print("\033[92mtidy reported no errors.\033[0m")
 
     return int(error is not None)