write to the same file from multiple processes at the same time?

[Do Re Mi chel La Si Do]

Hi !


On windows, with PyWin32, to read this little sample-code :


import time
import win32file, win32con, pywintypes

def flock(file):
    hfile = win32file._get_osfhandle(file.fileno())
    win32file.LockFileEx(hfile, win32con.LOCKFILE_EXCLUSIVE_LOCK, 0, 0xffff, 
pywintypes.OVERLAPPED())

def funlock(file):
    hfile = win32file._get_osfhandle(file.fileno())
    win32file.UnlockFileEx(hfile, 0, 0xffff, pywintypes.OVERLAPPED())


file = open("FLock.txt", "r+")
flock(file)
file.seek(123)
for i in range(500):
    file.write("AAAAAAAAAA")
    print i
    time.sleep(0.001)

#funlock(file)
file.close()




Michel Claveau