#自定義函數參數需將未給定值的變量放在前面,給定變量的值放在後面
def func(b,a='red'):
c = a + b
print (c)
print("a:",a,
"b:",b,
"c:",c)
a = 'yell'
b = 'ow'
func(a,b)#3
zbx@zbxpc:~$ /usr/bin/python3 /home/zbx/桌面/mofan_python.py
owyell
a: ow b: yell c: owyell