Szathmáry László honlapja @ DEIK | Nim2 / Read the whole content of a text file

$ cat input.txt
First line.
Second line.
Last line.

(1) read the whole content to a string
f = open("input.txt", "r") content = f.read() f.close() print("'" + content + "'")	let content = readFile("input.txt") echo "'" & content & "'"

Output:

'First line.
Second line.
Last line.
'

(2) read the whole content to a list/seq
f = open("input.txt", "r") lines = f.read().splitlines() f.close() print(lines) # ['First line.', 'Second line.', 'Last line.']	import std/strutils let v1 = readFile("input.txt").splitlines() echo v1 # @["First line.", "Second line.", "Last line.", ""] let v2 = readFile("input.txt").strip().splitlines() echo v2 # @["First line.", "Second line.", "Last line."]

Notice the subtle difference:

Python: when you use .splitlines(), at the end of the resulting list there is no empty string.
Nim: at the end of the seq (v1) there is an empty string. So .splitlines() must just call .split('\n'). If you don't need that empty string, then combine splitlines() with strip() .