lab4-extra¶
seq_sqrt(xs)¶
A function seq_sqrt(xs) which takes a list of non-negative numbers
xs with elements \([x_0, x_1, x_2, \ldots, x_n]\), and returns
the list
\([\sqrt{x_0}, \sqrt{x_1}, \sqrt{x_2}, \ldots, \sqrt{x_n}]\). In
other words, the function takes a list of numbers, and returns a list of
the same length that contains the square root for each number in the
list.
Examples:
In [ ]: seq_sqrt([1, 2, 3])
Out[ ]: [1.0, 1.4142135623730951, 1.7320508075688772]
In [ ]: seq_sqrt([1, 4, 9])
Out[ ]: [1.0, 2.0, 3.0]
wc(filename)¶
Write a function wc(filename) that returns the number of words in
file filename. The name wc stands for Word Count. To split a string
s into words, use s.split() for this exercise (i.e. the
behaviour of the split() method is here used to define what a word
is).
Example 1: For a file data.txt with content:
One Two
a function call wc('data.txt') should return 2.
Example 2: For a file data.txt with content:
One Two
Three Four Five
a function call wc('data.txt') should return 5.
You can test your function on the Alice in Wonderland book and should expect that this has more than 10,000 words.
(If you use Linux or OSX, you can download a file offered at a URL using
wget URL from the a terminal. For this example, try
wget https://www.gutenberg.org/files/19033/19033.txt).
Please include the extra tasks in your file lab4.py
and submit as Computing lab4 assignment.
Back to lab4.
End of lab4-extra.