python(5)---center,ljust,rjust功能实现小函数

def center0(str0,n,m = ' '):    #设置一个空字符串接收字符    strs = ''    if (n - len(str0))%2 == 1:        strs += m * int((n - len(str0))//2)        strs = strs + str0        strs = strs + m * int((n - len(str0))//2+1)    else:        strs = m * int((n-len(str0))/2) + str0 + m * int((n-len(str0))/2)    return strsstr1 = '小白'print(center0(str1,11,'0'))def ljust0(str0,n,m = ' '):    #设置一个空字符串接收字符    strs = ''    strs = str0 + m * int(n-len(str0))    return strsstr1 = '小白'print(ljust0(str1,11,'0'))def rjust0(str0,n,m = ' '):    #设置一个空字符串接收字符    strs = ''    strs = m * int(n-len(str0)) +  str0    return strsstr1 = '小白'print(rjust0(str1,11))