In Python, there are 3 ways to remove all whitespace in a string. Using str.replace Function The str.replace(x) function returns a copy of the string with all occurrences of substring old replaced by new. See the following example: #!/usr/bin/p...

In Python, there are 3 ways to delete a list element by value. Using list.remove Function The list.remove(x) function removes the first item from the list whose value is equal to x. It raises a ValueError if there is no such item. See the following...

In Python, there are 3 ways to return dictionary keys as a list. Using keys Function The dict.keys() function returns a view object that displays a list of all the keys in the dictionary in order of insertion. See the following example: #!/usr/...

In Python, there are 3 ways to get file creation and modification dates times. Using os.path Function The os.path.getmtime() function returns the time of last modification of path. The os.path.getctime() function returns the system’s ctime which, o...

In Python, using the ord function is the easiest way to get the ASCII value of a character as an int. Using ord Function The ord() function returns an integer representing the Unicode code point of that character. To get the ASCII code of a charact...

In Python, there are 3 ways to check if a variable exists. Using locals Function The locals() function returns the dictionary of the current local symbol table. #!/usr/bin/python3 vName = 1 if 'vName' in locals(): print("exists") exists ...

In Python, there are 4 ways to copy a dictionary. Using dict Method If you want to copy the dict, you have to do so explicitly with: #!/usr/bin/python3 a = {"a": 1, "b": 2} # Copy b = dict(a) b['a'] = 3 print(a) print(b) {'a': 1, 'b': 2} {'...

In Python, there are 3 ways to move a file. Using os Module The os.rename() method renames the file or directory src to dst. If dst exists, the operation will fail with an OSError subclass in a number of cases: #!/usr/bin/python3 # Import modu...

In Python, there are 2 ways to determine if an object is iterable. Using Duck Typing Duck typing is a concept related to dynamic typing, where the type or the class of an object is less important than the methods it defines. When you use duck typing...

In Python, there are 3 ways to remove duplicates in list. Using Built-in set Function The built-in set() function returns a new set object, optionally with elements taken from iterable. If you later need a real list again, you can similarly pass the...

In Python, using the triple-quoted strings is the easiest way to create multiline comments. Using triple-quoted Strings String literals can span multiple lines. One way is using triple-quotes: """...""" or '''...'''. You can use triple-quoted strin...

In Python, there are 2 ways to check for NaN values. Using math.isnan Method The math.isnan(x) method returns True if x is a NaN (not a number), and False otherwise. For example, #!/usr/bin/python3 # Import module import math f = float('nan') ...

In Python, there are 3 ways to check what version of the Interpreter is interpreting my script. Using sys.version String A string containing the version number of the Python interpreter plus additional information on the build number and compiler us...

In Python, there are 3 ways to check if a directory exists. Using os.path.isdir Method You can use os.path.isdir() to check if a directory exists, it really simple. For example, #!/usr/bin/python3 # Import module import os d = "./folder" print...

In Python, there are 2 ways to get the filename without the extension from a path. Using pathlib Module You can use .stem from pathlib to get the filename without the extension from a path, it really simple. For example, #!/usr/bin/python3 # Im...