Non Empty Lines

You need to count how many non-empty lines a given text has.

Empty line is a line without symbols or with only space symbols

**Input: ** Text.

**Output: ** Int.

**Example:**

non_empty_lines('one simple line') == 1 non_empty_lines('') == 0 non_empty_lines('\nonly one line\n ') == 1 non_empty_lines(''' Lorem ipsum dolor sit amet, consectetur adipiscing elit Nam odio nisi, aliquam ''') == 3