diff options
Diffstat (limited to 'Lib/os.py')
| -rw-r--r-- | Lib/os.py | 10 |
1 files changed, 7 insertions, 3 deletions
@@ -317,7 +317,7 @@ else: def getenv(key, default=None): """Get an environment variable, return None if it doesn't exist. - The optional second argument can specify an alternative default.""" + The optional second argument can specify an alternate default.""" return environ.get(key, default) def _exists(name): @@ -458,14 +458,18 @@ otherwise return -SIG, where SIG is the signal that killed it. """ if _exists("fork"): if not _exists("popen2"): def popen2(cmd, mode="t", bufsize=-1): - assert mode[:1] in ("b", "t") import popen2 stdout, stdin = popen2.popen2(cmd, bufsize) return stdin, stdout if not _exists("popen3"): def popen3(cmd, mode="t", bufsize=-1): - assert mode[:1] in ("b", "t") import popen2 stdout, stdin, stderr = popen2.popen3(cmd, bufsize) return stdin, stdout, stderr + + if not _exists("popen4"): + def popen4(cmd, mode="t", bufsize=-1): + import popen2 + stdout, stdin = popen2.popen4(cmd, bufsize) + return stdin, stdout |