6.E: Strings (Exercises)
- Page ID
- 3101
Exercise 5: Take the following Python code that stores a string:`
str = 'X-DSPAM-Confidence:
0.8475
'
Use find
and string slicing to extract the portion of the string after the colon character and then use the float
function to convert the extracted string into a floating point number.
Exercise 6:
Read the documentation of the string methods at
https://docs.python.org/3.5/library/...string-methods
You might want to experiment with some of them to make sure you understand how they work. strip
and replace
are particularly useful.
The documentation uses a syntax that might be confusing. For example, in find(sub[, start[, end]])
, the brackets indicate optional arguments. So sub
is required, but start
is optional, and if you include start
, then end
is optional.
- A tuple is a sequence of comma-separated values inside a pair of parenthesis. We will cover tuples in Chapter 10↩