(Occurrences of a specified character) Write a function that finds the number of occurrences of a specified character in the string using the following header: def count(s, ch): For example, count("Welcome", 'e') returns 2. The str class has the count method. Implement your function without using the count method. Write a test program that reads a string and a character and displays the number of occurrences of the character in the string. Sample Run Enter a string: Welcome to Python Enter a character: o o appears in Welcome to Python 3 times