CODEWITHSUNDEEP
pythonjupyter-notebook
Karoline
Karoline

Reputation: 45

Text file in python

The screenshot of the text file I'm trying to read from

I have a text file in python jupyter notebook. The questions is asking 'Count the numbers larger than 0.1.' I do not know how to write a code for this. The text file has names and integers. I think I can create two lists for this, but not sure what how to get the output for the numbers larger than .1.

This is the code that I have written so far. 

def ans9(file):
    infile = open(file)
    contents = infile.read().split()
    infile.close()

Upvotes: 2

Views: 387

Answers (3)

Benoît P
Benoît P

Reputation: 3265

I don't agree with tgikal's use of lists-of-lists. The correct data structure in this case is probably a dictionary (yes indentations look funny but PEP-8 compliant and if you ignore them it reads like English) :

filename = 'people.txt'
with open(filename) as file:
    filtered_users = {user:score 
                      for user, score in (line.split() 
                                          for line in file
                                          if line)
                      if score > 0.1}

print(len(filtered_users))

Upvotes: 0

tgikal
tgikal

Reputation: 1680

If all you need is a count of them, something like this would work:

def ans9(file):
    with open(file, 'r') as infile:
        count = 0
        for line in infile:
            if float(line.split('\t')[1]) >  0.1:
                count += 1

    return count

If you want a split up representation of the data:

def ans9(file):
    with open(file, 'r') as infile:
        items = []
        for line in infile:
            item = line.split('\t')
            if float(item[1]) >  0.1:
                items.append(item)

    return items

Would return a list that looks like [["a", "0.22"], ["b", "0.11"]] and you could iterate through it fairly easily.

Upvotes: 1

Osman Mamun
Osman Mamun

Reputation: 2882

with open('a.txt', 'r') as f:
    data = []
    for line in f:
        data.append(float(line.split()[1]))


print(len([i for i in data if i > 0.1]))
# prints 2 for the following data:
Smith 0.88
Johnson 0.68
Brown 0.04

Upvotes: 0

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