python escaped with multi-line output

Use '' '' '' output in multiple lines

E.g:

print('''line1
line2
line3''')

Output:

line1
line2
line3

Use single line r '' may not escape the content

E.g:

print(r'I am "OK"')

Output:

I am "OK"

Use \ character can be escaped back

E.g:

print('I am \"OK\"')

Output:

I am "OK"

Use r '' '' '' may not be escaped multiple lines

E.g:

print(r'''line1
line2\n
line3''')

Output:

Line1
Line2 \ N
Line3