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-rw-r--r--Lib/popen2.py8
1 files changed, 5 insertions, 3 deletions
diff --git a/Lib/popen2.py b/Lib/popen2.py
index 2fd9a19..e0f2880 100644
--- a/Lib/popen2.py
+++ b/Lib/popen2.py
@@ -89,7 +89,8 @@ class Popen3:
_active.remove(self)
return self.sts
-if hasattr(os, "popen2"):
+
+if sys.platform[:3] == "win":
def popen2(cmd, mode='t', bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. If 'bufsize' is
specified, it sets the buffer size for the I/O pipes. The file objects
@@ -109,7 +110,7 @@ else:
inst = Popen3(cmd, 0, bufsize)
return inst.fromchild, inst.tochild
-if hasattr(os, "popen3"):
+if sys.platform[:3] == "win":
def popen3(cmd, mode='t', bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. If 'bufsize' is
specified, it sets the buffer size for the I/O pipes. The file objects
@@ -129,7 +130,7 @@ else:
inst = Popen3(cmd, 1, bufsize)
return inst.fromchild, inst.tochild, inst.childerr
-if hasattr(os, "popen4"):
+if sys.platform[:3] == "win":
def popen4(cmd, mode='t', bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. If 'bufsize' is
specified, it sets the buffer size for the I/O pipes. The file objects
@@ -139,6 +140,7 @@ if hasattr(os, "popen4"):
else:
pass # not yet on unix
+
def _test():
cmd = "cat"
teststr = "abc\n"