I have a path like so:
S:\Test\Testing\Tested\A\B\C
and a list
include = ['S:\Test\Testing',
'S:\Domino\Testing',
'S:\Money\tmp']
How do I check if the path I have starts with any of the paths in this list?
So in this case the first element would match and it would return True.
A way to do it without worrying about manual string comparisons:
from pathlib import PurePath
original_parent_path = PurePath(r"S:\Test\Testing\removed\sub\dirs")
# Only take top 3 directories (S:\ counts as one)
parent_path = PurePath(*original_parent_path.parts[:3])
test_path1 = PurePath(r"S:\Test\Testing\subdir")
test_path2 = PurePath(r"S:\Test\notsubdir")
print(test_path1.is_relative_to(parent_path)) # True
print(test_path2.is_relative_to(parent_path)) # False
PurePath makes no access to the filesystem so this does not check if the directories actually exist.
for:else style where you break on success and raise in else .. or just pack it all into a function and return
Path also wouldn't access the filesystem, and likewise does not check if the directory exists. It's just that concrete paths provide methods for accessing the filesystem, while pure paths don't.
r before strings with backslashes in them if you don't want them to mean an escape sequence.PurePath(r"S:\Test\Testing\removed\sub\dirs") will be a path with only one part. Using PureWindowsPath explicitly would fix thisUse .commonpath() from the os.path module:
import os
p1 = 'S:\Test\Testing\Tested\A\B\C'
p2 = 'S:\Test\Testing\Hello'
common_path = os.path.commonpath([p1, p2])
common_path
output:
'S:\Test\Testing'
include = ['S:\Test\Testing',
'S:\Domino\Testing',
'S:\Money\tmp']
common_path in include
output:
True
Using pathlib:
from pathlib import PureWindowsPath as Path
start_path = Path(r"S:\Test\Testing\Tested\A\B\C")
three_deep_path = Path(*start_path.parts[:3])
print(three_deep_path)
test_path = Path(r"S:\Test\Testing\Hello")
print(test_path.is_relative_to(base_path))
bad_path = Path(r"S:\Test\NotTesting\Hello")
print(bad_path.is_relative_to(base_path))
outputs
S:\Test\Testing
True
False
mypath.startswith(beginning+os.sep)?S:\Test\TestingfromS:\Test\Testing\Tested\A\B\C? Do you want to extract the path exactly three levels deep, or the one to the directory namedTestinghowever deep, or some other criteria?