python3遇到的error

SyntaxError: (unicode error) ‘unicodeescape’ codec can’t decode bytes in position

原始代码
for x in os.listdir('C:\Users\Administrator\Desktop\files'):
    print(x)

解决方法：
for x in os.listdir(r'C:\Users\Administrator\Desktop\files'):
    print(x)

 UnicodeDecodeError: 'gbk' codec can't decode byte 0xab in position 137: illegal multibyte sequence

#原始代码
with open(path+'/'+file, 'r') as f:
        content = f.read()

#解决方法
with open(path+'/'+file, 'r', encoding='utf-8') as f:
        content = f.read()

 TypeError: cannot use a string pattern on a bytes-like object

#原始代码
response = urllib.request.urlopen('url')
content = response.read()
content = re.sub('</p>', '\r\n', content)

#解决方法
response = urllib.request.urlopen('https://zhuanlan.zhihu.com/p/81054179')
content = response.read()
content = content.decode('utf-8')
content = re.sub('</p>', '\r\n', content)

TypeError: 'int' object is not callable

# 原始代码
len = 7
data = [1,2,3]
print(len(data)
      
#解决办法：变量名不小心使用了内置函数的名字，修改变量名即可
ln = 7
data = [1,2,3]
print(len(data)