Use try/finally with file opening to close the file

system/crypttab.py

@@ -155,8 +155,10 @@ def main():
 
 
     if changed and not module.check_mode:
+        try:
             f = open(path, 'wb')
             f.write(str(crypttab))
+        finally:
             f.close()
 
     module.exit_json(changed=changed, msg=reason, **module.params)
@@ -173,9 +175,11 @@ class Crypttab(object):
                 os.makedirs(os.path.dirname(path))
             open(path,'a').close()
 
+        try:
             f = open(path, 'r')
             for line in f.readlines():
                 self._lines.append(Line(line))
+        finally:
             f.close()
 
     def add(self, line):

system/locale_gen.py

@@ -77,11 +77,15 @@ def fix_case(name):
 
 def replace_line(existing_line, new_line):
     """Replaces lines in /etc/locale.gen"""
+    try:
         f = open("/etc/locale.gen", "r")
         lines = [line.replace(existing_line, new_line) for line in f]
+    finally:
         f.close()
+    try:
         f = open("/etc/locale.gen", "w")
         f.write("".join(lines))
+    finally:
         f.close()
 
 def set_locale(name, enabled=True):
@@ -91,11 +95,15 @@ def set_locale(name, enabled=True):
         new_string = '%s \g<charset>' % (name)
     else:
         new_string = '# %s \g<charset>' % (name)
+    try:
         f = open("/etc/locale.gen", "r")
         lines = [re.sub(search_string, new_string, line) for line in f]
+    finally:
         f.close()
+    try:
         f = open("/etc/locale.gen", "w")
         f.write("".join(lines))
+    finally:
         f.close()
 
 def apply_change(targetState, name):
@@ -129,14 +137,18 @@ def apply_change_ubuntu(targetState, name):
         localeGenExitValue = call(["locale-gen", name])
     else:
         # Delete locale involves discarding the locale from /var/lib/locales/supported.d/local and regenerating all locales.
+        try:
             f = open("/var/lib/locales/supported.d/local", "r")
             content = f.readlines()
+        finally:
             f.close()
+        try:
             f = open("/var/lib/locales/supported.d/local", "w")
             for line in content:
                 locale, charset = line.split(' ')
                 if locale != name:
                     f.write(line)
+        finally:
             f.close()
         # Purge locales and regenerate.
         # Please provide a patch if you know how to avoid regenerating the locales to keep!