Python练习（四）_for a < len(results)

Python练习（四）

1.矩阵转置，输入一个4行5列的矩阵并转置

a = []
#行数控制
for i in range(4):
    a.append([])
    #列数控制
    for j in range(5):
        print('第'+str(i+1)+'行，第'+str(j+1)+'列')
        a[i].append(int(input('请输入整数：')))
print(a)
 
result = []
for i in range(5):
    item = []
    for j in range(4):
        item.append(a[j][i])
    result.append(item)
print(result)

2.按照姓名排序，有如下一份数据，按照姓名排序。

from xpinyin import Pinyin
content = []
with open ('score.txt','r',encoding='utf-8') as f:
    for line in f.readlines():
        content.append(line.replace('\n',''))
content = content[1:]
print(content)
n