Python Lists
%d int, %s string, %f/%g floating point
# % operator
text = "%d little pigs come out or I'll %s and %s and %s" %
(3, 'huff', 'puff', 'blow down')
colors = ['red', 'blue', 'green']
print colors[0]
print colors[2]
print len(colors)
b = colors
squares = [1, 4, 9, 16]
sum = 0
for num in squares:
sum +=num
print sum
list = ['larry', 'curly', 'moe']
if 'curly in list:
print 'yay'
num = 1234
lst = [int(i) for i in str(num)]
i= 37107287533902102798797998220837590246510135740250L
>>> lst = [int(j) for j in str(i)]
>>> lst
[3, 7, 1, 0, 7, 2, 8, 7, 5, 3, 3, 9, 0, 2, 1, 0, 2, 7, 9, 8, 7, 9, 7, 9, 9, 8, 2, 2, 0, 8, 3, 7, 5, 9, 0, 2, 4, 6, 5, 1, 0, 1, 3, 5, 7, 4, 0, 2, 5, 0]
http://stackoverflow.com/questions/780390/convert-a-number-to-a-list-of-integers
range creates a list holding all the values while xrange creates an object that can iterate over the numbers on demand
In python 2**3 equates to pow(2,3)
>>>def main():
total = 0
for number in xrange(1, 1001):
total += pow(number, number)
print(str(total)[-10:])
>>> if __name__ == '__main__':
main()
9110846700
__name__ : Every module in Python has a special attribute called __name__. It is a built-in variable that returns the name of the module.
__main__ : Like other programming languages, Python too has an execution entry point i.e. main. 'main' is the name of the scope in which top-level code executes. Basically you have two ways of using a Python module: Run it directly as a script, or import it. When a module is run as a script, its __name__ is set to __main__.
Thus,the value of __name__ attribute is set to __main__ when the module is run as main program. Otherwise the value of __name__ is set to contain the name of the module.
http://stackoverflow.com/questions/419163/what-does-if-name-main-do
