Exercise 1: Take the following Python code that stores a string:‘str = ’X-DSPAM-Confidence:0.8475’Usefindand string slicing to extract the portion of the string after the coloncharacter and then use...

Exercise 1: Take the following Python code that stores a string:‘str = ’X-DSPAM-Confidence:0.8475’Usefindand string slicing to extract the portion of the string after the coloncharacter and then use thefloatfunction to convert the extracted string into afloating point number.Exercise 2:Read the documentation of the string methods athttps://docs.python.org/3.5/library/stdtypes.html#string-methodsYou might want to experiment with some of them to make sure you understandhow they work.stripandreplaceare particularly useful.The documentation uses a syntax that might be confusing. For example, infind(sub[, start[, end]], the brackets indicate optional arguments. Sosubis required, butstartis optional, and if you includestart, thenendis optional.