http://projecteuler.net solutions in python

p1.py

# solution from http://weibo.com/1937408130
total = sum([x for x in range(1,1000) if x % 3 == 0 or x % 5 == 0])
print total

p2.py

total = 0;
a,b = 0,1
while a<4000000:
  a,b = b,a+b
  if a %2 == 0:
        print a;
        total += a;
print total

p40.py

arr=""
for n in range(900000):
  arr = arr + str(n)

print int(arr[1]) * int(arr[10]) * int(arr[100]) * int(arr[1000]) * int(arr[100
0]) * int(arr[100000]) * int(arr[1000000])