Python trim null

In fact, CPython strings are null-terminated internally. Yunhe Yunhe 5 5 silver badges 10 10 bronze badges. What's the use of j in this code? Boris Boris 9, 7 7 gold badges 72 72 silver badges 74 74 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked Related Hot Network Questions. Question feed. Search Forums. Show Threads. Show Posts. Remove or truncate trailing nulls from file. Registered User. Join Date: Jul I want to remove from a file the trailing null characters 0x00 and stop doing so when a different byte is found which should not be deleted , and either put the result to the same file or a different one.

Any ideas? Don Cragun. Try: Code :. Originally Posted by Don Cragun. I misunderstood your requirements. Even though you said you wanted to remove trailing nulls, the way you said that you wanted to stop removing nulls when a different byte was found sounded like you wanted to stop removing null bytes when a non-null byte was found after a string of one or more null bytes. Just removing trailing NUL bytes could be done in a shell script using a combination of something like od and grep to find the address of the last non-NUL byte in a file and dd to truncate a file to that length, but a relatively simple C program is probably easier.

If you save the following in dtn. Thank you very much, it works perfectly. Don Cragun Tribe. If GNU sed works with: Code :. Code :. Shell Programming and Scripting. Remove leading and trailing spaces from a file.

Hi, I am trying to remove leading and trailing spaces from a file using awk but somehow I have not been able to do it. Here is the data that I want to trim. Remove the leading and trailing date from a CSV file. In this article, you'll see only the most important techniques, such as stripping leading and trailing spaces as well as the ones inside the string.

You'll also learn how to remove tabs, newlines, carriage return CRLF , and other characters. And we'll be using nothing more than native methods and regex—no external libraries required! How to trim a string. How trim carriage return CRLF. How to trim a combination of characters from a string.

How to remove multiple spaces inside a string. How to strip a list of strings. Trimming a string means deleting certain chars from the start, the end, or both sides of a string.

Removing unwanted chars makes it easier to compare strings and can prevent hard to debug issues. You can remove any kind o character, but usually what we're interested in is deleting blank spaces, new lines, carriage return CRLF , tabs and other special symbols. In this section, we're going to see how to remove leading or trailing spaces, blank spaces, newline character, carriage return CRLF , and tabs.

The str class has a very convenient method to trim leading spaces named str. You can think of it as a left trim. When calling str. But if all you want is to strip the first char, then there are two ways of doing this. The first one assumes that there will always be at least one whitespace in the beginning of the string. If that's the case, then you can just slice it. The way to remove trailing spaces from the end of the string is to use str.

This method expects a list of chars and trims the string from the right. It removes all chars that match one of those you passed, and stop as soon as it cannot match anymore.

By default, str.