diff options
Diffstat (limited to 'numpy/lib/npyio.py')
| -rw-r--r-- | numpy/lib/npyio.py | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/numpy/lib/npyio.py b/numpy/lib/npyio.py index bab30355c..ec89397a0 100644 --- a/numpy/lib/npyio.py +++ b/numpy/lib/npyio.py @@ -745,8 +745,9 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None, each row will be interpreted as an element of the array. In this case, the number of columns used must match the number of fields in the data-type. - comments : str, optional - The character used to indicate the start of a comment; + comments : str or sequence, optional + The characters or list of characters used to indicate the start of a + comment; default: '#'. delimiter : str, optional The string used to separate values. By default, this is any @@ -819,7 +820,14 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None, """ # Type conversions for Py3 convenience if comments is not None: - comments = asbytes(comments) + if isinstance(comments, (basestring, bytes)): + comments = [asbytes(comments)] + else: + comments = [asbytes(comment) for comment in comments] + + # Compile regex for comments beforehand + comments = (re.escape(comment) for comment in comments) + regex_comments = re.compile(asbytes('|').join(comments)) user_converters = converters if delimiter is not None: delimiter = asbytes(delimiter) @@ -897,10 +905,10 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None, returns bytes. """ - if comments is None: - line = asbytes(line).strip(asbytes('\r\n')) - else: - line = asbytes(line).split(comments)[0].strip(asbytes('\r\n')) + line = asbytes(line) + if comments is not None: + line = regex_comments.split(asbytes(line), maxsplit=1)[0] + line = line.strip(asbytes('\r\n')) if line: return line.split(delimiter) else: |