if __name__ == '__main__':
    mstr="saddddddsafcaxzdDsa"
    matr = "saddddddsafcaxzdDsa"
    mztr = "saddddddsafcaxzdDsa"
    mctr = "saddddddsafcaxzdDsa"
    #切片
    print(mstr[1:7])
    #大写
    print(mstr.upper())
    #小写
    print(mstr.lower())
    #首字母大写
    print(mstr.title())
    #显示变量类型
    print(type(mstr))
    #print输出样式
    print(mstr,mztr,matr,mctr)
    print(mstr, mztr, matr, mctr,sep="----",end="++")
    


