This is a very frequently asked question, how do I pad a numeric string with zeroes to the left, so that the string has a specific length? In this article, …
How to pad a string with zeroes to the left? Learn MoreThe del statement removes an element: Note that this mutates the existing dictionary, so the contents of the dictionary changes for anybody else who has a reference to the same instance. To return …
How to delete an element from a dictionary? Learn MoreIf you only want a single item’s count, use the count method: Important: this is very slow if you are counting multiple different items Each count call goes over the entire list of n elements. Calling count in a loop n times …
How to count the occurrences of a list item in Python? Learn MoreUse del and specify the index of the element you want to delete: Also supports slices: How to remove an element from a list by index in Python? You probably want pop: By …
How to remove an element from a list by index in Python? Learn MoreThere are two built-in functions that help you identify the type of an object. You can use type() if you need the exact type of an object, and isinstance() to check an object’s type against something. …
How to determine the type of an object in Python? Learn MoreYou need to double the {{ and }}: Here’s the relevant part of the Python documentation for format string syntax: Format strings contain “replacement fields” surrounded by curly braces {}. Anything that is not contained …
How can I print literal curly-brace characters in a string and also use .format on it in Python? Learn MoreSample query: I have the following folder structure. I want to import some functions from file.py in some_file.py. I’ve tried and some other various attempts but so far I couldn’t manage to import …
How to import files from different folders in Python? Learn MoreAlthough os.rename() and shutil.move() will both rename files, the command that is closest to the Unix mv command is shutil.move(). The difference is that os.rename() doesn’t work if the source and destination are on different disks, while shutil.move() is …
How to move a file in Python? Learn MoreIn this post, we’ll discuss how to copy a file in Python with code examples. How to copy a file in Python? shutil has many methods you can use. One of …
How to copy a file in Python? Learn MoreQuery: For example, if passed the following: How do I check to see if a is empty? How to check if a list is empty in Python? This can be done using …
How to check if a list is empty in python? Learn MoreQuery explained: I know that I can do: I can also do this: But if I want to do the same thing inside two different exceptions, the best I can …
How to catch multiple exceptions in one line in Python? Learn MoreQuery: How can I list all files of a directory in Python and add them to a list? How to list all files of a directory in Python? Method #1: os.listdir() will …
How to list all files of a directory in Python? Learn MoreQuery: How can I create or use a global variable in a function? If I create a global variable in one function, how can I use that global variable in …
How to use global variables in a function in Python? Learn MoreQuery explained: I am a bit puzzled by the following code: What I don’t understand is the key portion. How does Python recognize that it needs only to read the key from …
How to iterate over dictionaries using ‘for’ loops in Python? Learn MoreThe following code is the solution: Caveats follow Note that while this is perhaps the cleanest way to answer the question as asked, index is a rather weak component of the list API, and I …
How to find the index of an item in a list in Python? Learn MoreSample query: How do I access the index in a for loop like the following? I want to get this output: When I loop through it using a for loop, how do I access …
How to access the index in ‘for’ loop? [Answered] Learn MoreQuery explained: What is the most elegant way to check if the directory a file is going to be written to exists, and if not, create the directory using Python? …
How to safely create a nested directory in Python? [Answered] Learn More