
i = 0
for num in range(1, 100):
    if num % 2 == 1:
        i = i+num
print(i)


print("hello world")
print('hello world')

print('''zhe shi hen duo
hang
aaa
b
c
''')

age = 20.0

name = 'marty'

print(name, 'is', age, 'years old')

print('{0} was {1} years old'.format(name,age))

print("{name} is {adj}".format(name='xiuyun',adj='beautiful'))

print('{0:.4f}'.format(1/3))

print('{0:-^10}'.format('hello'))

print('a')
print('b','n',end=name)

print("what's your name")

print('what\'s your name ')

print('my name is zt \nthis is second line')

print("this line is not enough\
      so i write a second line")
