How Python reads files on a per-line basis how to remove line breaks

Python reads a file on a per-line basis, with line breaks at the end of each line, which makes it very inconvenient for subsequent business processing logic to remove line breaks for each line. Look at the following case:

>>> A ="Hello world\n">>>PrintA#you can see a space below Hello world.Hello World>>> A.split ()#convert a character to a list by using the Split method['Hello',' World']#take the first character from a list>>>a.split () [0]'Hello'>>>

How Python reads files on a per-line basis how to remove line breaks