My python to the solve the problems on Project Euler.

projectEuler.py

# Problem 1

# sum is the sum of the numbers so far.
sum = 0
# n is the number that is being tried.
n = 0
# While n is less then 1000,
while (n < 1000):
    # And when n/3 or n/5 has a remainder of 0,
    if n % 3 == 0 or n % 5 == 0:
        # add n to sum.
        sum += n
    # Then increment n.
    n += 1
# Print the answer.
print("sum =",sum)


# Problem 2

# fibA and fibB are the two numbers that are to be summed,
fibA = 1
fibB = 2
# and fibC is the output.
fibC = 3
# sum is the sum of the Fibonacci numbers so far computed.
# It starts at 2 because the second Fibonacci number will not be included otherwise.
sum = 2
# As long as the Fibonacci numbers are less then 4000000,
while (fibC < 4*10**6):
    # generate the next number as the sum of the two previous numbers.
    fibC = fibA + fibB
    # If it is even,
    if fibC % 2 == 0:
        # add it to sum.
        sum += fibC
    # Then set fibA and fibB back one tick so that you can start over.
    fibA = fibB
    fibB = fibC
# Print the sum.
print(sum)

Now updated with problem 2.