a = "hello world"

print(a)
print(type(a))

b = "Tian"
print(type(b))

c = '''
    I
    am
    Tian
'''

print(type(c))

d = """
    呵 呵
    哒
"""

print(type(d))

aa = "I'm Tian"
aa = 'I\'m Tian'

print(aa)