Let’s talk about the differences between Python 2 and Python 3, and their impact on microPython.

ljg2np

Let’s talk about the differences between Python 2 and Python 3, and their impact on microPython. [Copy link]

Python's architecture gives people the feeling of being open, inclusive and wild, but what is relatively rare is that in its development path, it has actually abandoned the development rules of backward compatibility. This is the watershed between 2 and 3. As Python's ecological projection in embedded systems, who will microPython choose?

ljg2np

In Python 2's indentation mechanism, 1 tab and 8 spaces are equivalent, and both tabs and spaces are allowed to coexist in the code; Python 3 uses stricter indentation.

freebsder

mpy is based on py3. Except for historical reasons, don't consider 2

ljg2np

freebsder posted on 2024-10-31 09:47 mpy is based on py3. Except for historical reasons, don't consider 2

Python 2 vs Python 3, which one is the performance king? Some time ago, an author named Anthony Shaw on Hackermoon did some tests and concluded that although Python 2 is faster than Python 3 in encryption and startup time tests, Python 3 is faster overall. Understanding the real reason for deprecating Python 2.0 can help us have a clearer understanding of the development of Python.

freebsder

ljg2np posted on 2024-10-31 10:12 Python 2 vs Python 3, which one is the performance king? Some time ago, an author named Anthony Shaw on Hackermoon did some...

Let the dust of history be left to history, just learn about it, and discard it if you are going to use it.

ljg2np

freebsder posted on 2024-10-31 10:28 Let the dust of history be left to history. Just learn about it. If you want to use it, just discard it.

I completely agree with your point of view, but beginners are still faced with the problem of choosing between py2 and py3. According to an online survey article in 2017, a comparison of the number of third-party tool packages for Python 2.7 and Python 3.5 in pypi, the official download source of pip, shows that the number of third-party tool categories corresponding to the Python 2.7 version is 28523, and the number for the Python 3.5 version is 12457. The gap between the two versions in the number of third-party tool packages supported is quite large.

freebsder

ljg2np posted on 2024-10-31 11:16 I completely agree with your point of view, but beginners still face the choice between py2 and py3. According to an online survey article in 2017, in the official pip download...

The inertia of history is also huge. Some of our tools can only run with 2.7. However, they have not been maintained for more than 10 years.

ljg2np

freebsder posted on 2024-10-31 11:36 The inertia of history is also huge. Some of our tools can only run with 2.7. But it has not been maintained for more than 10 years...

Yes, if you maintain the previous tools without clarifying py3 and py2, you may go astray; in addition, how to distinguish whether it is py2 or py3 in the source code of py may also cause some trouble.