Category:Python: Difference between revisions
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It is easy to create clean bug-free programs in Python due to the motto: "Errors should never pass silently." Python is an [[wp:Interpreter (computing)|interpreter]]. Python source files (.py files) are typically compiled to an intermediate [[bytecode]] language (.pyc files) and executed by a Python Virtual Machine. |
It is easy to create clean bug-free programs in Python due to the motto: "Errors should never pass silently." Python is an [[wp:Interpreter (computing)|interpreter]]. Python source files (.py files) are typically compiled to an intermediate [[bytecode]] language (.pyc files) and executed by a Python Virtual Machine. |
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===Notes=== |
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=Complete the implementation of the stub function q1_mod_inverse(a, n) according to the following specification: |
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Because Python uses whitespace for structure, do not format long code examples with leading whitespace, instead use <code><nowiki><pre></pre></nowiki></code> tags, or, preferably, <code><nowiki><lang python></lang></nowiki></code> tags. This will make it easier to copy code into and out of the wiki. Example: |
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:<lang python>print 'this line must not have leading indentation!' |
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if True: |
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print 'example: ', foo(3), len(bar)</lang> |
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Some Python examples may deviate from idiomatic Python because they may be written to work in Python 3.X as well as Python 2.X environments. This includes doing things like: |
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if there exists a multiplicative inverse of a (mod n) then it should return that value, even if it is negative; |
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* Using brackets in print statements/functions of one expression. |
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if there is no multiplicative inverse of a (mod n) it should return the special value None |
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* Using zip and not izip; keys(), values(), items() and not their iter- forms. |
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You may implement (and call from q1_mod_inverse(a, n)) any additional function required to assist in this task. |
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* Checking for raw_input and setting raw_input to input if not found. |
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* Conditionally importing reduce if it is not found. |
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This style is not a requirement for Python code on RC, but it may be in use and should not necessarily be 'corrected' if found in examples. |
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The command line is often used in Python for short pieces of code, and so, again; examples showing such use are not incorrect and may be left. |
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If your implementation does not correspond to the specification above (for instance, if you obtain a solution from the web, but do not correctly adapt it) then you will receive zero. Hint: You do not need to go beyond the materials provided in this unit for a solution. |
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==See Also== |
==See Also== |