Loops and numbers
i = 0 while i < 11: i += 1
for i in range(11): pass
Conditionals
n = int(raw_input('enter a number: ')) if n < 0: print 'negative' elif n > 0: print 'positive' else: print 'zero'
Loops and strings
s = raw_input('enter a string: ') for eachChar in s: print eachChar # (does not print index)
or
for i in range(len(s)): print i, s[i]
i = 0 slen = len(s) while i < slen: print i, s[i]
for i, x in enumerate(s): print i, x
Loops and operators
subtot = 0 for i in range(5): subtot += int(raw_input('enter a number: ')) print subtot
# uses sum() BIF and generator expressions print sum(int(raw_input('enter a number: ')) for i in range(5))
