无法在 Windows 10 & Python 3 上创建长文件名
Cannot Create Long Filename on Windows 10 & Python 3
在 Windows 10 Home 和 Python 3.6.6 上，我通过 setting it in the registry and by prefixing \?\. I have also followed and ensured that the path uses \ instead of /, is in unicode u' and is an absolute path. There are no illegal characters in my file name. My file path is also way smaller than the maximum total path length of 32,767 characters.
启用了长路径
尽管执行了上述所有操作，但当我尝试创建长文件名时，我仍然得到 OSError: [Errno 22] Invalid argument。我已经尝试了 3 种不同的方法来创建文件路径，如下面的 output_filepath 但都不起作用：
# Long filename - Does not work
import os, pathlib
output_filepath = u'\\?\' + os.path.join(os.path.dirname(os.path.realpath(__file__)), u"somereallylongname" * 30 + u".result")
# output_filepath = u'\\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
# output_filepath = r'\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
print("filepath length = %s" % len(output_filepath))
print("filename length = %s" % len(os.path.basename(output_filepath)))
if not os.path.exists(os.path.dirname(output_filepath)): os.makedirs(os.path.dirname(output_filepath))
pathlib.Path(output_filepath).touch() # or open(output_filepath, 'a').close()
print("Wrote to " + output_filepath)
文件名组件（文件名中反斜杠之间的部分）太长，Component Length的Max number取决于GetVolumeInformation的lpMaximumComponentLength参数返回的值功能。
例如，对于支持长名称的FAT文件系统，函数存储值255。
尽量缩短文件名部分的长度，如：
import os, pathlib
output_filepath = u'\\?\' + os.path.join(os.path.dirname(os.path.realpath(__file__)), u"somereallylongname" * 14 + u'\' + u"somereallylongname" * 14 + u'\' + u"somereallylongname" * 2 + u".result")
# output_filepath = u'\\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
# output_filepath = r'\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
print(output_filepath)
print("filepath length = %s" % len(output_filepath))
print("filename length = %s" % len(os.path.basename(output_filepath)))
if not os.path.exists(os.path.dirname(output_filepath)): os.makedirs(os.path.dirname(output_filepath))
pathlib.Path(output_filepath).touch() # or open(output_filepath, 'a').close()
print("Wrote to " + output_filepath)
在 Windows 10 Home 和 Python 3.6.6 上，我通过 setting it in the registry and by prefixing \?\. I have also followed \ instead of /, is in unicode u' and is an absolute path. There are no illegal characters in my file name. My file path is also way smaller than the maximum total path length of 32,767 characters.
尽管执行了上述所有操作，但当我尝试创建长文件名时，我仍然得到 OSError: [Errno 22] Invalid argument。我已经尝试了 3 种不同的方法来创建文件路径，如下面的 output_filepath 但都不起作用：
# Long filename - Does not work
import os, pathlib
output_filepath = u'\\?\' + os.path.join(os.path.dirname(os.path.realpath(__file__)), u"somereallylongname" * 30 + u".result")
# output_filepath = u'\\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
# output_filepath = r'\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
print("filepath length = %s" % len(output_filepath))
print("filename length = %s" % len(os.path.basename(output_filepath)))
if not os.path.exists(os.path.dirname(output_filepath)): os.makedirs(os.path.dirname(output_filepath))
pathlib.Path(output_filepath).touch() # or open(output_filepath, 'a').close()
print("Wrote to " + output_filepath)
文件名组件（文件名中反斜杠之间的部分）太长，Component Length的Max number取决于GetVolumeInformation的lpMaximumComponentLength参数返回的值功能。
例如，对于支持长名称的FAT文件系统，函数存储值255。
尽量缩短文件名部分的长度，如：
import os, pathlib
output_filepath = u'\\?\' + os.path.join(os.path.dirname(os.path.realpath(__file__)), u"somereallylongname" * 14 + u'\' + u"somereallylongname" * 14 + u'\' + u"somereallylongname" * 2 + u".result")
# output_filepath = u'\\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
# output_filepath = r'\?\C:\Users\Jarrett\Downloads\somereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongnamesomereallylongname\x.x'
print(output_filepath)
print("filepath length = %s" % len(output_filepath))
print("filename length = %s" % len(os.path.basename(output_filepath)))
if not os.path.exists(os.path.dirname(output_filepath)): os.makedirs(os.path.dirname(output_filepath))
pathlib.Path(output_filepath).touch() # or open(output_filepath, 'a').close()
print("Wrote to " + output_filepath)