CODEWITHSUNDEEP
python
Apmartin
Apmartin

Reputation: 85

How do I trim a string after certain amount of characters appear more then once in Python?

I am trying to scan a string and every time it reads a certain character 3 times, I would like to cut the remaining string

for example: The string "C:\Temp\Test\Documents\Test.doc" would turn into "C:\Temp\Test\"

Every time the string hits "\" 3 times it should trim the string

here is my code that I am working on

prefix = ["" for x in range(size)]
num = 0
...            
...            
            for char in os.path.realpath(src):
                for x in prefix:
                    x = char
                    if x =='\': # I get an error here
                        num = num + 1
                    if num == 3:
                        break
                    print (num)

            print(prefix)
...
...

the os.path.realpath(src) is the string with with the filepath. The "prefix" variable is the string array that I want to store the trimmed string.

Please let me know what I need to fix or if there is a simpler way to perform this.

Upvotes: 2

Views: 100

Answers (4)

Hippolippo
Hippolippo

Reputation: 813

In python the backslash character is used as an escape character. If you do \n it does a newline, \t does a tab. There are many other things such as \" lets you do a quote in a string. If you want a regular backslash you should do "\\"

Upvotes: 1

Austin
Austin

Reputation: 26039

Do split and then slice list to grab required and join:

s = 'C:\Temp\Test\Documents\Test.doc'

print('\\'.join(s.split('\\')[:3]) + '\\')
# C:\Temp\Test\

Note that \ (backslash) is an escaping character. To specifically mean a backslash, force it to be a backslash by adding a backslash before backslash \\, thereby removing the special meaning of backslash.

Upvotes: 2

iScripters
iScripters

Reputation: 421

Something like this would do..

x = "C:\Temp\Test\Documents\Test.doc"
print('\\'.join(x.split("\\")[:3])+"\\")

Upvotes: 0

AbtPst
AbtPst

Reputation: 8018

try

s = "C:\\Temp\\Test\\Documents\\Test.doc"
answer = '\\'.join(s.split('\\', 3)[:3])

Upvotes: 0

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