How to check key presence in a python dictionary
This is the simplest way to check if a given key is present in a dictionary.
Regular Expression In Python – Simple Grouping
This python code shows how to define a regular expression path and have it applied to some string. The regex is defined using the compile built-in method of re library. In the following example some groups are used to parse information from filename strings listed by ‘ls’ linux command. Exception will raise if no match will be found.