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# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import random
import string
_string_with_symbols = (
string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
)
def random_string(length):
return ''.join(random.choice(string.ascii_letters) for _ in xrange(length))
def random_string_with_symbols(length):
return ''.join(
random.choice(_string_with_symbols) for _ in xrange(length)
)
def is_ascii(s):
try:
s.encode("ascii")
except UnicodeEncodeError:
return False
except UnicodeDecodeError:
return False
else:
return True
def to_ascii(s):
"""Converts a string to ascii if it is ascii, otherwise leave it alone.
If given None then will return None.
"""
if s is None:
return None
try:
return s.encode("ascii")
except UnicodeEncodeError:
return s
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