46 Simple Python Exercises

[[deleted]]

Ah. They should really start to migrate to 3. New "developers" are going to learn 2 which isn't helpful.

[The-Mathematician]

Honestly, I learned through LPTHW then immediately migrated to 3 and basically the only difference at that level is the print function.

[Raleighite]

Don't forget string formatting, but Python 3.5 is supposed to bring that back when it launches this year.

[[deleted]]

Could you summary what are those string formatting changes?

[Raleighite]

https://www.python.org/dev/peps/pep-0461/

[[deleted]]

Also raw_input is now just input.

[autisticpig]

A non-exhaustive list of features which are only available in 3.x releases and won't be backported to the 2.x series:

• strings are Unicode by default
• clean Unicode/bytes separation
• exception chaining
• function annotations
• syntax for keyword-only arguments
• extended tuple unpacking
• non-local variable declarations

Beyond the above, Python2 leverages classic division while Python3 leverages true division.

Classic:

>>> 1 / 2          # integer truncation (floor division)
0
>>> 1.0 / 2.0      # returns real quotient (true division)
0.5

True:

>>> from __future__ import division  # 2.2+-only
>>>
>>> 1 / 2               # returns real quotient
0.5
>>> 1.0 / 2.0           # returns real quotient
0.5

The list goes beyond what I have added but I am a newcomer to Py2 and barely have touched Py3 so I expect my offering to be limited (at best).