Hướng dẫn python o_excl - python o_excl
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Sau đây là 30 ví dụ mã của OS.O_EXCL ().Bạn có thể bỏ phiếu cho những người bạn thích hoặc bỏ phiếu cho những người bạn không thích và đi đến dự án gốc hoặc tệp nguồn bằng cách theo các liên kết trên mỗi ví dụ.Bạn cũng có thể muốn kiểm tra tất cả các chức năng/lớp có sẵn của HĐH mô -đun hoặc thử chức năng tìm kiếm.30 code examples of os.O_EXCL(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module os, or try the search function Ví dụ 1 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #2 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #3 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path Ví dụ #4 def touch(self, mode=0o666, exist_ok=True):
"""
Create this file with the given access mode, if it doesn't exist.
"""
if self._closed:
self._raise_closed()
if exist_ok:
# First try to bump modification time
# Implementation note: GNU touch uses the UTIME_NOW option of
# the utimensat() / futimens() functions.
try:
self._accessor.utime(self, None)
except OSError:
# Avoid exception chaining
pass
else:
return
flags = os.O_CREAT | os.O_WRONLY
if not exist_ok:
flags |= os.O_EXCL
fd = self._raw_open(flags, mode)
os.close(fd) Ví dụ #5 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path Ví dụ #6 def touch(self, mode=0o666, exist_ok=True):
"""
Create this file with the given access mode, if it doesn't exist.
"""
if self._closed:
self._raise_closed()
if exist_ok:
# First try to bump modification time
# Implementation note: GNU touch uses the UTIME_NOW option of
# the utimensat() / futimens() functions.
try:
self._accessor.utime(self, None)
except OSError:
# Avoid exception chaining
pass
else:
return
flags = os.O_CREAT | os.O_WRONLY
if not exist_ok:
flags |= os.O_EXCL
fd = self._raw_open(flags, mode)
os.close(fd) Ví dụ #7 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #8 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #9 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #10 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #11 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #12 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() 1Ví dụ #13 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() 2Ví dụ #14 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #15 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #16 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() 5Ví dụ #17 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #18 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #19 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() 8Ví dụ #20 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #21 def touch(self, mode=0o666, exist_ok=True):
"""
Create this file with the given access mode, if it doesn't exist.
"""
if self._closed:
self._raise_closed()
if exist_ok:
# First try to bump modification time
# Implementation note: GNU touch uses the UTIME_NOW option of
# the utimensat() / futimens() functions.
try:
self._accessor.utime(self, None)
except OSError:
# Avoid exception chaining
pass
else:
return
flags = os.O_CREAT | os.O_WRONLY
if not exist_ok:
flags |= os.O_EXCL
fd = self._raw_open(flags, mode)
os.close(fd) Ví dụ #22 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 1Ví dụ #23 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 2Ví dụ #24 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #25 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #26 def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
pidfile.write("%s\n" % pid)
pidfile.close() Ví dụ #27 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 6Ví dụ #28 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 7Ví dụ #29 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 8Ví dụ #30 def create_cleanup_lock(p):
"""crates a lock to prevent premature folder cleanup"""
lock_path = get_lock_path(p)
try:
fd = os.open(str(lock_path), os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644)
except OSError as e:
if e.errno == errno.EEXIST:
raise EnvironmentError(
"cannot create lockfile in {path}".format(path=p)
) from e
else:
raise
else:
pid = os.getpid()
spid = str(pid).encode()
os.write(fd, spid)
os.close(fd)
if not lock_path.is_file():
raise EnvironmentError("lock path got renamed after successful creation")
return lock_path 9 |
