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-rw-r--r--coverage/phystokens.py3
-rw-r--r--coverage/python.py2
2 files changed, 2 insertions, 3 deletions
diff --git a/coverage/phystokens.py b/coverage/phystokens.py
index 587ec1c6..1bc6330d 100644
--- a/coverage/phystokens.py
+++ b/coverage/phystokens.py
@@ -151,6 +151,7 @@ generate_tokens = CachedTokenizer().generate_tokens
COOKIE_RE = re.compile(r"^\s*#.*coding[:=]\s*([-\w.]+)", flags=re.MULTILINE)
+@contract(source='bytes')
def _source_encoding_py2(source):
"""Determine the encoding for `source`, according to PEP 263.
@@ -247,6 +248,7 @@ def _source_encoding_py2(source):
return default
+@contract(source='bytes')
def _source_encoding_py3(source):
"""Determine the encoding for `source`, according to PEP 263.
@@ -257,7 +259,6 @@ def _source_encoding_py3(source):
string: the name of the encoding.
"""
- assert isinstance(source, bytes)
readline = iternext(source.splitlines(True))
return tokenize.detect_encoding(readline)[0]
diff --git a/coverage/python.py b/coverage/python.py
index 3e8e9f39..faa26ffc 100644
--- a/coverage/python.py
+++ b/coverage/python.py
@@ -77,7 +77,6 @@ def get_zip_bytes(filename):
data = zi.get_data(parts[1])
except IOError:
continue
- assert isinstance(data, bytes)
return data
return None
@@ -160,7 +159,6 @@ class PythonFileReporter(FileReporter):
def source(self):
if self._source is None:
self._source = get_python_source(self.filename)
- assert isinstance(self._source, unicode_class)
return self._source
def should_be_python(self):