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不喜欢读书的第一天

print("Hello,world")

print('Hello,world')

print("""一
行
诗
歌
""")

var = input().split()
print(int(var[0]) + int(var[1]))

s = "朋友"
print("你好",s[0],s[1])

消除空格

s = "朋友"
print("你好",s[0],s[1],sep=',')

a = float(input())
b = float(input())
c = a * b
print ("%.2lf" % c)

a = int(input())
b = int(input())
c = a + b
print(a,"+",b,"=",c)

a = int(input())
b = int(input())
c = a + b
print (f'{a} + {b} = {c}')