Mercurial > public > mercurial-scm > hg
comparison mercurial/pycompat.py @ 31425:63a39d647888
py3: make py3 compat.iterbytestr simpler and faster
With Python 3.4.3, timit says 11.9 usec-> 6.44 usec. With Python
3.6.0, timeit says 14.1 usec -> 9.55 usec.
| author | Martin von Zweigbergk <martinvonz@google.com> |
|---|---|
| date | Wed, 15 Mar 2017 09:32:18 -0700 |
| parents | 4acc49335a6e |
| children | b70407bd84d5 |
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| 31424:4acc49335a6e | 31425:63a39d647888 |
|---|---|
| 76 | 76 |
| 77 bytechr = struct.Struct('>B').pack | 77 bytechr = struct.Struct('>B').pack |
| 78 | 78 |
| 79 def iterbytestr(s): | 79 def iterbytestr(s): |
| 80 """Iterate bytes as if it were a str object of Python 2""" | 80 """Iterate bytes as if it were a str object of Python 2""" |
| 81 return iter(s[i:i + 1] for i in range(len(s))) | 81 return map(bytechr, s) |
| 82 | 82 |
| 83 def sysstr(s): | 83 def sysstr(s): |
| 84 """Return a keyword str to be passed to Python functions such as | 84 """Return a keyword str to be passed to Python functions such as |
| 85 getattr() and str.encode() | 85 getattr() and str.encode() |
| 86 | 86 |