Why popular language 1.Python
Easy to learn
Large and powerful library
Development of high efficiency
What are the disadvantages language 2.Python
Python execution speed is not fast enough
The lock limits of concurrent Python GIL: GIL refers Python global interpreter lock (Global Interpreter Lock)
Python2 not compatible with Python3
3. Use Python2 or Python3
Python3 Python is the future
Python official proposal directly to learn Python3
Python2 only maintains 2020