函数格式
def name(args):
something...
返回值
def add(a, b):
c = a + b
return c
result = add(1, 2)
print(result)
def capitalaze(data):
index = 0
temp = ''
for item in data:
if index == 0:
temp = item.upper()
else:
temp += item
index += 1
return temp
result = capitalaze('hello xiao')
print(result)
