a. Define a function replace_abc(str1, char1) that takes a string str1 and a single character char1 as input. The function returns an updated string, where all occurrences of the letters a, b, or c have been replaced by char1.

b. Define a variable mystr = It is a book about abcs and print mystr

c. Call the above function with the string mystr and the single character * as inputs and print the value of returned by the function.

Here is a sample output

Python 3.5.2 Shell File Edit Shell Debug Options Window Help RESTART Ca /U /106 /LABS /l a sers/Arunita/Dropbox. basol.py It is a book about a bc' s It is ook out s Ln: 208 Col: 74