Define a function named read_length_per_line(filename) that takes a filename as a parameter and returns a list of integers. The function reads the contents of the file specified in the parameter and returns a list of values where each value is the length per line. For example, if a file contains the following:Hans loved to make up storiesHe would sit for hours in the tiny yardthen, the function returns [29, 39] where 29 is the number of characters in the first line and 39 is the number of characters in the second line.Here are some text files you can test your code with:names.txtmini_names.txtFor example:Test Resultprint(read_length_per_line('sentences.txt'))[29, 39]
Question
Define a function named read_length_per_line(filename) that takes a filename as a parameter and returns a list of integers. The function reads the contents of the file specified in the parameter and returns a list of values where each value is the length per line. For example, if a file contains the following:Hans loved to make up storiesHe would sit for hours in the tiny yardthen, the function returns [29, 39] where 29 is the number of characters in the first line and 39 is the number of characters in the second line.Here are some text files you can test your code with:names.txtmini_names.txtFor example:Test Resultprint(read_length_per_line('sentences.txt'))[29, 39]
Solution
Sure, here is a Python function that does what you described:
def read_length_per_line(filename):
with open(filename, 'r') as file:
lines = file.readlines()
return [len(line) for line in lines]
This function works as follows:
- It opens the file with the name provided in the
filenameparameter. - It reads all lines from the file with the
readlines()method, which returns a list of lines. - It uses a list comprehension to create a new list where each element is the length of the corresponding line in the file. The
len()function is used to get the length of a line. - It returns the list of line lengths.
You can test this function with a file named 'sentences.txt' like this:
print(read_length_per_line('sentences.txt'))
This will print a list of integers, where each integer is the length of the corresponding line in the 'sentences.txt' file.
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