Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.

Among the most popular languages for this purpose are Bash, Python ... command line interface. They excel at: Loop structures and conditionals: For repetitive and conditional operations. Input/output ...

When programming in Python, you may need to ask users for input, then translate that input into lower case letters. For example, a user may enter a text string in all capital letters and you need ...