Discuss string and character testing methods provided in Python. Please provide an original example of a simple Python program that tests the case of a user-defined string and the individual characters contained within the user-defined string. Use all of the Python character testing methods listed below in your original Python example. Please remember to use the correct Python syntax. Character Testing Methods: isupper() isspace() islower() isdigit() isalpha() isalnum()

The property where a string z is appended to two strings x and y, and one of the strings between xz and yz is in the language L and the other is not in the language L is called

Although Algol60's flexible style permits statements to start and stop anywhere, the majority of programming languages today demand that statements explicitly end with an end symbol, such as a semicolon or a colon. In contrast, Python and a select few other programming languages have a predefined structure whereby statements start in a certain column and conclude at the end of a line of code unless continuation marks are included for each statement. You will discover how fixed or free formats affect readability, writability, and security in this section.

Generate a constrained Regular Expression for the language that is described by the following:   1)  all strings MUST begin with at least one 'a' character 2)  all strings MUST end with EXACTLY one 'a' 3)  between the 'a' characters are an unknown number of 'b', 'c', and 'd' characters. 4)  the number of 'c' characters are at least one. 5)  the number of 'b' characters is exactly the same as the number of 'd' characters.