文件操作 - file_util.py
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文件: /snap/core20/2769/usr/share/subiquity/subiquitycore/file_util.py
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import os import stat import tempfile _DEF_PERMS = 0o644 def write_file(filename, content, mode=None, omode="wb", copy_mode=False): """Atomically write filename. open filename in mode 'omode', write content, chmod to 'mode'. """ if mode is None: mode = _DEF_PERMS if copy_mode: try: file_stat = os.stat(filename) mode = stat.S_IMODE(file_stat.st_mode) except OSError: pass tf = None try: tf = tempfile.NamedTemporaryFile(dir=os.path.dirname(filename), delete=False, mode=omode) tf.write(content) tf.close() os.chmod(tf.name, mode) os.rename(tf.name, filename) except OSError as e: if tf is not None: os.unlink(tf.name) raise e
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