这段python代码可以通过*号打印出简单的圣诞树,在python3.3下运行通过
# Happy Holidays!
# with height = 5:
#     *
#    ***
#   *****
#  *******
# *********
#     |
# Dependency: Python 3.3
height = 5
stars = 1
for i in range(height):
    print((' ' * (height - i)) + ('*' * stars))
    stars += 2
print((' ' * height) + '|')
