String Functions contains a group of random string methods.

StringFunctions.py

# Generate a string with all letters from the English alphabet. :
def alphabet():
    result = 'abcdefghijklmnopqrstuvwxyz';
    return result + result.upper();

# Generate a randomly scrambled version of a string:
import random;
def scramble(string):
    characterList = list(string);
    random.shuffle(characterList);
    return ''.join(characterList);

# Convert a floating point value to a string with specified decimal positions:
# Example: fpToString(value = 3.14159, decimalPositions = 2) returns '3.14'.
def fpToString(value, decimalPositions):
    string = str(round(value, decimalPositions));
    periodPosition = string.find('.');
    if (periodPosition >= 0):
        string = string[0: periodPosition + decimalPositions + 1];
    return string;
    
# Check if a word is a palindrome, i.e., reads the same backward:
def isPalindrome(word):
    characterList = list(word);
    characterList.reverse();
    backword = ''.join(characterList);
    return (word == backword);

# Encode a message using a cipher, an 'old' to 'new' string mapping:
def encode(message, old, new):
    result = [];
    for char in message:
        pos = old.find(char);
        if(pos >= 0):
            char = new[pos];
        result.append(char);
    return ''.join(result);

# Decode a message using a given cipher:
def decode(message, old, new):
    return encode(message, new, old);