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Fix some 'DeprecationWarning: invalid escape sequence' warnings and use str.format for string interpolation.

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I am seeing a lot of deperecation warnings when I use moto for my tests (running under pytest), so I figured I'll clean up some of them.
This commit is contained in:
Asher Foa 2020-03-12 09:34:25 -07:00
commit 374b623e1d
6 changed files with 20 additions and 18 deletions
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moto/s3/utils.py
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@ -52,7 +52,7 @@ def parse_region_from_url(url):
def metadata_from_headers(headers):
metadata = {}
meta_regex = re.compile("^x-amz-meta-([a-zA-Z0-9\-_]+)$", flags=re.IGNORECASE)
meta_regex = re.compile(r"^x-amz-meta-([a-zA-Z0-9\-_]+)$", flags=re.IGNORECASE)
for header, value in headers.items():
if isinstance(header, six.string_types):
result = meta_regex.match(header)