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Backwards Compatibility part 3... (Python recipe) by Barry Walker
ActiveState Code (http://code.activestate.com/recipes/577884/)

Some example lines to add to any test code you write that work from Python 1.4.0 to 3.2.2 on various platforms.

It is all Public Domain and you can do with it as you please...

I really don't care how you vote and/or rate this as I try to write Python code for my usage to work on the platforms and versions inside the code.

Some people will know this but MANY won't and there will be more to come that involve platform and version compatibility...

Enjoy finding simple solutions to often VERY difficult problems...

(Watch out for wordwrapping, etc...)

Bazza, G0LCU...

Python, 89 lines
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# compatibility3.py

#

# Backwards compatibility for text mode Python 1.4.0 to 3.2.2...

# Some simple lines that work for all these versions on the

# classic AMIGA, E-UAE, PCLinuxOS 2009, Debian 6.0.0, Windows XP and

# Vista and WinUAE. Note, classic AMIGAs and derivatives only reach

# Python version 2.4.6. AROS goes to version 2.5.2.

# Python versions checked against, 1.4.0, 2.0.1, 2.4.2, 2.5.2, 2.6.1

# 2.6.6, 2.7.2, 3.0.1, 3.1.3 and 3.2.2.

# These are to go along with these pointers...

# http://code.activestate.com/recipes/577836-raw_input-for-all-versions-of-python/?in=lang-python

# http://code.activestate.com/recipes/577868-backwards-compatibility/?in=lang-python

# http://code.activestate.com/recipes/577872-bacwards-compatibility-part-2/?in=lang-python

# ===================================================================

# Some more ASCII print statements that work for general usage...

#

# Basic string formatting still works using Python's print function

# method using the above platforms and versions...

#

# This does NOT work for example:-

# >>> work=123.456

# >>> print("This does NOT work... ",work," ...for all versions of Python!")

#

# However these do...

print("String formatting using most of the conversion characters...")

print("Two strings to start with, see code...\n")

stringone="(C)2011, B.Walker,"

stringtwo=" G0LCU.\n"

print("%s%s" %(stringone,stringtwo))

print("A floating point number...")

somefloat=123.456

print("The floating point number is %f..." %somefloat)

print("Now a floating point number using two numbers divided by each other...")

someint=61

print("The floating point number is %f..." %(somefloat/someint))

stringone="The results are"

print("A general string, integer and floating point mixture...")

print("%s %i and %f..." %(stringone,someint,somefloat))

print("Hex %x, octal %o, decimal %d, float %f and string %s of number 61." %(someint,someint,someint,someint,str(someint)))

print("Some conversion characters might not work, '%r' is one...")

print("The next line will cause a Python error report on very early versions...")

print("This line might cause an error:- %r..." %someint)

# ===================================================================

# There will be more to come... ;o)

# Enjoy finding simple solutions to often very difficult problems. :)

This function......

>>> print(somestring)

......seems to have been around for the vast majority of needs for Python from at least Version 1.4.0.

Therefore "print(function)" is valid irrespective of platform or version.

So long as one keeps to the example ideas given in the uploads so far Python Version 3.2.2 will give the same results on screen on all the platforms and relevant versions applied to said platforms.

The next "print(function)" upload will be displaying integers and floats on screen directly that still work under Python Versions 1.4.0 to 3.2.2...

Good eh!

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU...

Tags: all_versions, amiga, apple, backwards_compatibility, e_uae, linux, macbook_pro, windows, winuae