本文整理匯總了Python中posixpath.exists方法的典型用法代碼示例。如果您正苦於以下問題：Python posixpath.exists方法的具體用法？Python posixpath.exists怎麽用？Python posixpath.exists使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類posixpath的用法示例。
在下文中一共展示了posixpath.exists方法的7個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: renames
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def renames(old, new):
"""renames(old, new)
Super-rename; create directories as necessary and delete any left
empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned way until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
file.
"""
head, tail = path.split(new)
if head and tail and not path.exists(head):
makedirs(head)
rename(old, new)
head, tail = path.split(old)
if head and tail:
try:
removedirs(head)
except error:
pass 示例2: makedirs
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def makedirs(name, mode=0777):
"""makedirs(path [, mode=0777])
Super-mkdir; create a leaf directory and all intermediate ones.
Works like mkdir, except that any intermediate path segment (not
just the rightmost) will be created if it does not exist. This is
recursive.
"""
head, tail = path.split(name)
if not tail:
head, tail = path.split(head)
if head and tail and not path.exists(head):
try:
makedirs(head, mode)
except OSError, e:
# be happy if someone already created the path
if e.errno != errno.EEXIST:
raise
if tail == curdir: # xxx/newdir/. exists if xxx/newdir exists
return 示例3: renames
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def renames(old, new):
"""renames(old, new)
Super-rename; create directories as necessary and delete any left
empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
file.
"""
head, tail = path.split(new)
if head and tail and not path.exists(head):
makedirs(head)
rename(old, new)
head, tail = path.split(old)
if head and tail:
try:
removedirs(head)
except error:
pass 示例4: test_islink
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def test_islink(self):
self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)
f = open(test_support.TESTFN + "1", "wb")
try:
f.write("foo")
f.close()
self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)
if hasattr(os, 'symlink'):
os.symlink(test_support.TESTFN + "1", test_support.TESTFN + "2")
self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)
os.remove(test_support.TESTFN + "1")
self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)
self.assertIs(posixpath.exists(test_support.TESTFN + "2"), False)
self.assertIs(posixpath.lexists(test_support.TESTFN + "2"), True)
finally:
if not f.close():
f.close() 示例5: renames
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def renames(old, new):
"""renames(old, new)
Super-rename; create directories as necessary and delete any left
empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
file.
"""
head, tail = path.split(new)
if head and tail and not path.exists(head):
makedirs(head)
rename(old, new)
head, tail = path.split(old)
if head and tail:
try:
removedirs(head)
except OSError:
pass 示例6: test_islink
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def test_islink(self):
self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)
f = open(test_support.TESTFN + "1", "wb")
try:
f.write("foo")
f.close()
self.assertIs(posixpath.islink(test_support.TESTFN + "1"), False)
if hasattr(os, "symlink"):
os.symlink(test_support.TESTFN + "1", test_support.TESTFN + "2")
self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)
os.remove(test_support.TESTFN + "1")
self.assertIs(posixpath.islink(test_support.TESTFN + "2"), True)
self.assertIs(posixpath.exists(test_support.TESTFN + "2"), False)
self.assertIs(posixpath.lexists(test_support.TESTFN + "2"), True)
finally:
if not f.close():
f.close() 示例7: test_islink
# 需要導入模塊: import posixpath [as 別名]
# 或者: from posixpath import exists [as 別名]
def test_islink(self):
self.assertIs(posixpath.islink(support.TESTFN + "1"), False)
self.assertIs(posixpath.lexists(support.TESTFN + "2"), False)
f = open(support.TESTFN + "1", "wb")
try:
f.write(b"foo")
f.close()
self.assertIs(posixpath.islink(support.TESTFN + "1"), False)
if support.can_symlink():
os.symlink(support.TESTFN + "1", support.TESTFN + "2")
self.assertIs(posixpath.islink(support.TESTFN + "2"), True)
os.remove(support.TESTFN + "1")
self.assertIs(posixpath.islink(support.TESTFN + "2"), True)
self.assertIs(posixpath.exists(support.TESTFN + "2"), False)
self.assertIs(posixpath.lexists(support.TESTFN + "2"), True)
finally:
if not f.close():
f.close()