Category Archives: Python

using the dir() Built-in function in Python programming

>>> import struct >>> dir() # show the names in the module namespace [‘__builtins__’, ‘__doc__’, ‘__name__’, ‘struct’] >>> dir(struct) # show the names in the struct module [‘Struct’, ‘__builtins__’, ‘__doc__’, ‘__file__’, ‘__name__’, ‘__package__’, ‘_clearcache’, ‘calcsize’, ‘error’, ‘pack’, ‘pack_into’, ‘unpack’, ‘unpack_from’] >>> class Shape(object): def __dir__(self): return [‘area’, ‘perimeter’, ‘location’] >>> s = Shape() >>> dir(s) …

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How to write a program to solve project Euler problem 4

”’ This file is worked on from http://www.s-anand.net/euler.html , Solution of Problem 4 A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 x 99. Find the largest palindrome made from the product of two 3-digit numbers. ”’ n = 0 for …

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Project Euler Problem 3, solution internals using python debugger

$python -m pdb euler-three.py > /home/jeffrin/beautifulwork/lib/euler-three.py(7)() -> ”’ (Pdb) r 6857 –Return– > /home/jeffrin/beautifulwork/lib/euler-three.py(17)()->None -> print n (Pdb) next –Return– > (1)()->None (Pdb) next The program finished and will be restarted > /home/jeffrin/beautifulwork/lib/euler-three.py(7)() -> ”’ (Pdb) next > /home/jeffrin/beautifulwork/lib/euler-three.py(9)() -> n = 600851475143 (Pdb) next > /home/jeffrin/beautifulwork/lib/euler-three.py(11)() -> i = 2 (Pdb) next > /home/jeffrin/beautifulwork/lib/euler-three.py(12)() …

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Project Euler Problem 2, solution internals using python debugger

$python -m pdb project-euler-2.py > /home/jeffrin/beautifulwork/lib/project-euler-2.py(13)() -> ”’ (Pdb) next > /home/jeffrin/beautifulwork/lib/project-euler-2.py(15)() -> cache = {} (Pdb) next > /home/jeffrin/beautifulwork/lib/project-euler-2.py(16)() -> def fib(n): (Pdb) next > /home/jeffrin/beautifulwork/lib/project-euler-2.py(20)() -> n = 0 (Pdb) next > /home/jeffrin/beautifulwork/lib/project-euler-2.py(21)() -> i = 0 (Pdb) next > /home/jeffrin/beautifulwork/lib/project-euler-2.py(22)() -> while fib(i) /home/jeffrin/beautifulwork/lib/project-euler-2.py(23)() -> if not fib(i) % 2: n = …

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bubble(think so) sort in python programming language

# bubblesort attempted to be ported to python by # Jeffrin Jose T <ahiliation@yahoo.co.in> # from bubble.php by # detour@metalshell.com # License : GPL.   array_size = 20; import random result = [] # hash values of numbers between -5 to 256 are the same as the # numbers themselves. So, whatever may be the …

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