CODEWITHSUNDEEP
pythonlistiosplit
eewongjr
eewongjr

Reputation: 3

How do I save this text file into a list in python

I have a text file that consists of 1 column of numbers (like: 1e-5, 1.15e3, etc). How do I save the column to a list as just floats?

input text file looks like this:

 1.00E-05
 1.06E-05
 1.13E-05
 1.19E-05

I tried this: 

file=open('C:\Users\Enrique Jr\Desktop\h_energy.txt', "r")
h_energy=[]
for line in file:
h_energy.append((line.split()))
file.close()

and got an output of this:

[['1.00E-05'], ['1.06E-05'], ['1.13E-05'], ['1.19E-05']

Upvotes: 0

Views: 304

Answers (3)

Syed Farjad Zia Zaidi
Syed Farjad Zia Zaidi

Reputation: 3360

try this:

file=open('output.txt', "r")
array = []
for line in file:
    array.append(float(line.rstrip()))
file.close()

Upvotes: 0

blairforce1
blairforce1

Reputation: 7

file=open('output.txt', "r")
for line in file:
    list.append(float(line.split("\t")[0]))
    list.append(float(line.split("\t")[1]))
file.close()

If you require ints and floats to be stored as different types and not just have float representation of integers, then you would need to try-catch to see if you can parse as an int, and if not then as a float:

try:
    list.append(int(line.split("\t")[0]))
except ValueError:
    try:
        inNumberfloat = float(inNumber)
        list.append(float(line.split("\t")[0]))
    except ValueError:
        #neither an int nor float

Upvotes: 0

Anthony Kong
Anthony Kong

Reputation: 40624

You can use the csv reader library in python: https://docs.python.org/2/library/csv.html

It will be something like this:

>>> import csv
>>> with open('output.txt', 'r') as csvfile:
...     data = csv.reader(csvfile, delimiter='\t')
...     print data
[["1", "2"], ["3.4", "5"], ...]

You will need to convert the data from text to float or int yourself.

Upvotes: 3

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