45 lines
686 B
Python
45 lines
686 B
Python
import os
|
|
|
|
if not hasattr(os, "remove"):
|
|
print("SKIP")
|
|
raise SystemExit
|
|
|
|
# cleanup in case testfile exists
|
|
try:
|
|
os.remove("testfile")
|
|
except OSError:
|
|
pass
|
|
|
|
try:
|
|
f = open("testfile", "r+b")
|
|
print("Unexpectedly opened non-existing file")
|
|
except OSError:
|
|
print("Expected OSError")
|
|
pass
|
|
|
|
f = open("testfile", "w+b")
|
|
f.write(b"1234567890")
|
|
f.seek(0)
|
|
print(f.read())
|
|
f.close()
|
|
|
|
# Open with truncation
|
|
f = open("testfile", "w+b")
|
|
f.write(b"abcdefg")
|
|
f.seek(0)
|
|
print(f.read())
|
|
f.close()
|
|
|
|
# Open without truncation
|
|
f = open("testfile", "r+b")
|
|
f.write(b"1234")
|
|
f.seek(0)
|
|
print(f.read())
|
|
f.close()
|
|
|
|
# cleanup
|
|
try:
|
|
os.remove("testfile")
|
|
except OSError:
|
|
pass
|