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How can I check if character in a string is a letter? (Python)

I know about islower and isupper , but can you check whether or not that character is a letter? For Example: 6 Answers ...
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Useful code which uses reduce()? [closed]

Does anyone here have any useful code which uses reduce() function in python? Is there any code other than the usual + and * that we see in the examples? ...
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How to create a temporary directory/folder in Java?

Is there a standard and reliable way of creating a temporary directory inside a Java application? There's an entry in Java's issue database , which has a bit of code in the comments, but I wonder if there is a standard solution to be found in one of the usual libraries (Apache Commons etc.) ? ...
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What's the idiomatic syntax for prepending to a short python list?

list.append() is the obvious choice for adding to the end of a list. Here's a reasonable explanation for the missing list.prepend() . Assuming my list is short and performance concerns are negligible, is ...
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sed one-liner to convert all uppercase to lowercase?

I have a textfile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.' ...
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Check if a file exists with wildcard in shell script [duplicate]

I'm trying to check if a file exists, but with a wildcard. Here is my example: 21 Answers ...
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Is AngularJS just for single-page applications (SPAs)?

We are looking at options to build the front end of an application we are creating and are trying to evaluate a tool that will work for us and give us the best platform to move forward. ...
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How do I get a list of all the duplicate items using pandas in python?

I have a list of items that likely has some export issues. I would like to get a list of the duplicate items so I can manually compare them. When I try to use pandas duplicated method , it only returns the first duplicate. Is there a a way to get all of the duplicates and not just the first one?...
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Regular expression to extract text between square brackets

Simple regex question. I have a string on the following format: 14 Answers 14 ...
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How should I have explained the difference between an Interface and an Abstract class?

In one of my interviews, I have been asked to explain the difference between an Interface and an Abstract class . 30 Ans...