<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Extract a portion of a string.
String: Python is a great programming language
Substring: 'programming'<|im_end|>
<|im_start|>assistant
programming_str = 'Python is a great programming language'[17:]<|im_end|>
