python - 泡菜 : TypeError: a bytes-like object is required, 不是 'str'

Question

这个问题在这里已经有了答案:

Using pickle.dump - TypeError: must be str, not bytes (3 个回答)

关闭 4年前.

当我在 python 3 中运行以下代码时，我不断收到此错误:

fname1 = "auth_cache_%s" % username
fname=fname1.encode(encoding='utf_8')
#fname=fname1.encode()
if os.path.isfile(fname,) and cached:
    response = pickle.load(open(fname))
else:
    response = self.heartbeat()
    f = open(fname,"w")
    pickle.dump(response, f)

这是我得到的错误:

File "C:\Users\Dorien Xia\Desktop\Pokemon-Go-Bot-Working-Hack-API-master\pgoapi\pgoapi.py", line 345, in login
    response = pickle.load(open(fname))
TypeError: a bytes-like object is required, not 'str'

我尝试通过编码函数将 fname1 转换为字节，但仍然无法解决问题。有人可以告诉我有什么问题吗？

Answer 1

需要以二进制方式打开文件:

file = open(fname, 'rb')
response = pickle.load(file)
file.close()

写作时:

file = open(fname, 'wb')
pickle.dump(response, file)
file.close()

---

顺便说一句，您应该使用 with 来处理打开/关闭文件:

阅读时:

with open(fname, 'rb') as file:
    response = pickle.load(file)

写作时:

with open(fname, 'wb') as file:
    pickle.dump(response, file)