将文本文件转换为字符串或列表

Question

I have the following data in my text file:

5*0 4 3 2 5 7 7 3 6 3 2 6

8*2 4 5 6 7 8 7 3 7 7 3

I want to work on the data in python. so, I guessed it is better to convert it to string or list.

I used the following code:

a = open('test.txt', 'r')
b = a.readlines()
c = [x.replace('\n','') for x in b]
print(c)

but it gives:

['5*0 4 3 2 5 7 7 3 6 3 2 6 ', ' 8*2 4 5 6 7 8 7 3 7 7 3']

I wondered to know how I can convert it to the following:

['5*0', '4', '3', '2', '5', '7', '7', '3', '6', '3', '2', '6', '8*2', '4', '5', '6', '7', '8', '7', '3', '7', '7', '3']

Answer 1

I would simply change the readlines by the read method (does not split the lines into different list items), then change the '\\n' newline character by spaces and finally split the string by spaces.

a = open('test.txt', 'r')
b = a.read()
c = b.replace('\n', ' ').strip().split(' ')
a.close()
print(c)

I would suggest to use the with statement so as to not forget to close the file

with open('test.txt', 'r') as a:
    b = a.read()
c = b.replace('\n', ' ').strip().split(' ')
print(c)

Answer 2

try this

a = open('test.txt', 'r')
b = a.readlines()

new_list = []
for line in b:
    for item in line.strip().split():
        new_list.append(item)
print(new_list)

Answer 3

I will convert this to list compression and edit the post, but here it is without

a = open('test.txt', 'r')
b = a.readlines()
c = [a for n in str(b).split('\n') for a in n.split(' ') if a != '']
print(c)

>>> ['5*0', '4', '3', '2', '5', '7', '7', '3', '6', '3', '2', '6', '8*2', '4', '5', '6', '7', '8', '7', '3', '7', '7', '3']

Answer 4

you can do like this

c=['5*0 4 3 2 5 7 7 3 6 3 2 6 ', ' 8*2 4 5 6 7 8 7 3 7 7 3']
c=[j for i in c for j in i.split()]
print(c)

output

['5*0', '4', '3', '2', '5', '7', '7', '3', '6', '3', '2', '6', '8*2', '4', '5', '6', '7', '8', '7', '3', '7', '7', '3']

Answer 5

 with open('test.txt') as file: 
        print(file.read().split())

I used the with method to open and read the file along with the .read() method which reads the whole file instead of one line at a time, then the .split() method splits string at each ' ' , returning a list.