在python中只检索字符串的一部分

Question

I have a path string something like '/foo/bar1/bar2/test.txt' . I want to retrieve just '/foo/bar1/' from the string and want to ignore the rest. I tried doing that with \\/([\\w\\s]+)\\/|,(?!\\w)+? but that didn't help.

Can someone help me with this ?

Thanks in advance

Answer 1

s = '/foo/bar1/bar2/test.txt'

'/'.join(s.split('/')[:3])

# returns '/foo/bar1'

Change that 3 to the appropriate number. For further path manipulation have a look at os.path methods.