How to remove newlines except the ones beside the text in python?

Question

I have text file containing numbers with different number of newlines. How can I remove the new lines except the ones.

Example of numbers I have in text file

If I do open('thefile.txt').read().replace('\n', '') I will get everything in one line. How can I get output like this.

`[ line for line in open(file_path, 'r').readlines() if line.strip() ]` — internety, Jun 10 '17 at 13:49

MSeifert · Accepted Answer · 2017-06-10T13:52:30.563

I think it would be better to just remove all lines that only contain whitespaces and join the remaining ones afterwards:

For example:

with open('thefile.txt') as myfile:
    result = '\n'.join([line.strip() for line in myfile if line.strip()])

print(result)

Or if you don't want to strip twice:

result = '\n'.join([line for line in map(str.strip, myfile) if line])

or using filter instead of a comprehension:

result = '\n'.join(filter(bool, map(str.strip, myfile)))

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