30讲课后习题4
因为写不出来，就直接看答案了。下面是小甲鱼给的代码import os
def print_pos(key_dict):
keys = key_dict.keys()
keys = sorted(keys) # 由于字典是无序的，我们这里对行数进行排序
for each_key in keys:
print('关键字出现在第 %s 行，第 %s 个位置。' % (each_key, str(key_dict)))
def pos_in_line(line, key):
pos = []
begin = line.find(key)
while begin != -1:
pos.append(begin + 1) # 用户的角度是从1开始数
begin = line.find(key, begin+1) # 从下一个位置继续查找
return pos
def search_in_file(file_name, key):
f = open(file_name)
count = 0 # 记录行数
key_dict = dict() # 字典，用户存放key所在具体行数对应具体位置
for each_line in f:
count += 1
if key in each_line:
pos = pos_in_line(each_line, key) # key在每行对应的位置
key_dict = pos
f.close()
return key_dict
def search_files(key, detail):
all_files = os.walk(os.getcwd())
txt_files = []
for i in all_files:
for each_file in i:
if os.path.splitext(each_file) == '.txt': # 根据后缀判断是否文本文件
each_file = os.path.join(i, each_file)
txt_files.append(each_file)
for each_txt_file in txt_files:
key_dict = search_in_file(each_txt_file, key)
if key_dict:
print('================================================================')
print('在文件【%s】中找到关键字【%s】' % (each_txt_file, key))
if detail in ['YES', 'Yes', 'yes']:
print_pos(key_dict)
key = input('请将该脚本放于待查找的文件夹内，请输入关键字：')
detail = input('请问是否需要打印关键字【%s】在文件中的具体位置（YES/NO）：' % key)
search_files(key, detail)
以上是小甲鱼给的代码，但我运行的时候回报错。
请将该脚本放于待查找的文件夹内，请输入关键字：小甲鱼
请问是否需要打印关键字【小甲鱼】在文件中的具体位置（YES/NO）：YES
Traceback (most recent call last):
File "C:\Users\cwj\Desktop\python练习\seek3.py", line 56, in <module>
search_files(key, detail)
File "C:\Users\cwj\Desktop\python练习\seek3.py", line 46, in search_files
key_dict = search_in_file(each_txt_file, key)
File "C:\Users\cwj\Desktop\python练习\seek3.py", line 25, in search_in_file
for each_line in f:
UnicodeDecodeError: 'gbk' codec can't decode byte 0xae in position 4: illegal multibyte sequence
以上为报错结果，以前出现‘gbk’这种错位的时候，一般加上encoding=‘UTF-8’ 就能解决，这次确不行
求大佬告知下该怎么改代码。
我用的python是3.8.2 https://fishc.com.cn/thread-158932-1-1.html 可以使用Notepad++修改编码。
具体方法百度
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