Building a class to execute a function (Python)

Question

i'm completely new to python and I was just curious as to how i'd create a class named 'File' that would allow the following code to execute:

fname = input()
file = File()
if not file.count(fname):
    print("File ", fname, " not present")
else:
    for i in range(10):
        print(str(i) + " = " + "{0:5.2f}".format(file.get_count(i)) + "% ", end = ' ')

What would File.count and File.get_count do? Are you looking for fnmatch style filename matching? — Patrick Haugh
– Patrick Haugh, Commented Jul 27, 2018 at 14:27
@PatrickHaugh The count function of the File class counts the number of occurrences of each digit and the get count returns the percentage of the occurrence of each digit — NationzGG
– NationzGG, Commented Jul 27, 2018 at 14:35

Patrick Haugh · Accepted Answer · 2018-07-27 14:50:29Z

1

We could create a Counter subclass that accepts a file path, calculates the counts of each character, then provides a method that returns a percentage.

from collections import Counter

class File(Counter):
    def __init__(self, filename, **kwargs):
        with open(filename) as f:  # Caller can deal with FileNotFoundError
            super().__init__(f.read(), **kwargs)
        self.total = sum(self.values())
    def percentage(self, character):  # ranges from 0 to 1
        return self[character]/self.total

file = File("myfile.txt")  # 11223344556789
print(file.percent("1"))
# 0.14285714285714285

answered Jul 27, 2018 at 14:50

Patrick Haugh

61.4k13 gold badges94 silver badges101 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Building a class to execute a function (Python)

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related