Python program that shifts the given alphanumeric string by a certain offset.

This Python program shifts the inputted string forward and backward by a certain offset number 'n' that can be negative or positive integer. This integer ranges from +25 to -25. However, there is a minor error in this program which is left up to the viewer for rectification.
The output of the program is shown below:

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Recursive function in Python for evaluating Taylor's Series for Exponential Function

This Python 2.7 program, takes two inputs, x and n from a user and then evaluates the numerical value of Taylor's series for the exponential function. In the program, x indicates the power of e and n represents the number of terms to be included from the Taylor's series expansion. Furthermore, the program also prints the absolute value of the percentage error in the Taylor's approximation. The output and input of the program appears as:

A Python program that counts the number of given word in a file.

This Python 2.7 program accepts a word (string) from user and counts the occurrence of that word in the file chosen by user. In this program, the words with a punctuation either at the beginning or at the end (like: But, ) is also considered if that word matches with the inputted word. Suppose, if the given word is 'it' and the file is 'alice_short.txt' then the output looks like: alice_short.txt :

It gives a particular root of the predefined polynomial equation. The root lies in the upper and lower bound prescribed by the user. The output appears as:

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