In Python, there are 2 ways to convert all strings in a list to int. Using map Method You can convert all strings in a list to int using the map method. For example, #!/usr/bin/python3 a = ["1", "2", "4", "5"] b = list(map(int, a)) print(b) ...

In Python, there are 2 ways to capitalize the first letter of each word in a string. Using title Method The str.title() method returns a titlecased version of the string where words start with an uppercase character and the remaining characters are...

In Python, there are 2 ways to get the day of week given a date. Using weekday Method The weekday() method returns the day of the week as an integer, where Monday is 0 and Sunday is 6. The following example should cover whatever you are trying to ...

In Python, using the os.environ variable is the easiest way to set environment variables Using os.environ Variable os.environ behaves like a python dictionary, so all the common dictionary operations can be performed. In addition to the get and set ...

In Python, there are 2 ways to get a list of all subdirectories in the current directory. Using os.walk Function The os.walk() method generates the file names in a directory tree by walking the tree either top-down or bottom-up. The following examp...

In Python, there are 3 ways to get key by value in dictionary. Using keys Function Basically, it separates the dictionary's values in a list, finds the position of the value you have, and gets the key at that position. The following example: #!...

In Python, there are 3 ways to remove all empty strings from a list of strings. Using filter Function The filter(function, iterable) function constructs an iterator from those elements of iterable for which function returns true. The following exam...

In Python, there are 3 ways to get the system hostname. Using gethostname Method The socket.gethostname() method returns a string containing the hostname of the machine where the Python interpreter is currently executing. For example, #!/usr/bin...

In Python, there are 2 ways to retrieve a module's path. Using __file__ Attribute You can retrieve a module's path using the __file__ attribute. For example, #!/usr/bin/python3 # Import module import os print(os.__file__) /usr/local/lib/pyt...

In Python, there are 2 ways to get an absolute file path. Using abspath Function The os.path.abspath() method returns a normalized absolutized version of the pathname path. For example, #!/usr/bin/python3 # Import module import os abs = os.pat...

In Python, using the str.join function is the easiest way to concatenate a list of strings into a single string Using str.join Function The str.join() method returns a string which is the concatenation of the strings in iterable. A TypeError will be...

In Python, there are 2 ways to get a function name as a string. Using __name__ Attribute Using __qualname__ is the preferred method as it applies uniformly. It works on built-in functions as well: #!/usr/bin/python3 def my_func(): pass class...

In Python, there are 3 ways to get the size of a file. Using os.path.getsize Method The os.path.getsize() method returns the size, in bytes, of path. Raise OSError if the file does not exist or is inaccessible. For example, #!/usr/bin/python3 #...

In Python, using the uuid module is the easiest way to create a GUID/UUID. Using uuid Module uuid module provides immutable UUID objects (the UUID class) and the functions uuid1(), uuid3(), uuid4(), uuid5() for generating version 1, 3, 4, and 5 UUID...

In Python, using the timedelta object is the easiest way to subtract a day from a date. Using timedelta Object A timedelta object represents a duration, the difference between two dates or times. See the following example: #!/usr/bin/python3 #...