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Are strings cached?

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>>> a = "zzzzqqqqasdfasdf1234" >>> b = "zzzzqqqqasdfasdf1234" >>> id(a) 4402117560 >>> id(b) 4402117560 but >>> c = "<a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="113051">[email protected]</a>#$" >>> d = "<a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="644524">[email protected]</a>#$" >>> id(c) == id(d) False >>> id(a) == id(b) True Why get same id() result only when assign string? Edited: I replace “ascii string” with just … Read more

removing newlines from messy strings in pandas dataframe cells?

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I’ve used multiple ways of splitting and stripping the strings in my pandas dataframe to remove all the ‘n’characters, but for some reason it simply doesn’t want to delete the characters that are attached to other words, even though I split them. I have a pandas dataframe with a column that captures text from web pages using Beautifulsoup. The text has been cleaned a bit already by beautifulsoup, but it failed in removing the newlines attached to other characters. My strings look a bit like this:

Why are Python strings immutable? Best practices for using them

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What are the design reasons of making Python strings immutable? How does it make programming easier? I’m used to mutable strings, like the ones in C. How am I supposed to program without mutable strings? Are there any best practices? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the … Read more

Limiting Python input strings to certain characters and lengths

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I just started learning my first real programming language, Python. I’d like to know how to constrain user input in a raw_input to certain characters and to a certain length. For example, I’d like to show an error message if the user inputs a string that contains anything except the letters a-z, and I’d like to show one of the user inputs more than 15 characters.