Seperation of path in csv file-CodePudding

I am facing a problem regarding separation of path of files in a csv file. I have such a structure in a csv file:

w:b/c/v/n/1/y/i

w:b/c/v/n/2/h/l

w:b/c/v/n/3/n/r

w:b/c/v/n/4/f/e

this is one column of my csv file as the path name. Now what I need to do is to preserve my first column and create 3 more columns for:

1/ y /i
2  h  l
3  n  r
4  f  e

I know that .str.split('/', expand=True) works in such a cases but my problem is how to show that it should leave out "b/c/v/n" part. Could you please help me with it?

CodePudding user response：

If you have DataFrame like this:

              path
0  w:b/c/v/n/1/y/i
1  w:b/c/v/n/2/h/l
2  w:b/c/v/n/3/n/r
3  w:b/c/v/n/4/f/e

Then:

df[["col1", "col2", "col3"]] = (
    df["path"].str.split("/", expand=True).iloc[:, -3:]
)
print(df)

creates 3 new columns:

              path col1 col2 col3
0  w:b/c/v/n/1/y/i    1    y    i
1  w:b/c/v/n/2/h/l    2    h    l
2  w:b/c/v/n/3/n/r    3    n    r
3  w:b/c/v/n/4/f/e    4    f    e

CodePudding user response：

You could first get a slice of the string and then use split like the following:

.str[10:].str.split('/', expand=True)

CodePudding user response：

Another try is:

s = 'w:b/c/v/n/1/y/i'
temp = s.split("/")
s = "/".join(temp[0:4])   ","   ",".join(temp[4:7])

Result is: w:b/c/v/n,1,y,i