I recently learned how to write to a file in Python, and among it how to use Object Serialization library called “pickle”.
According to Documentation it should be quite easy
pickle.dump(x, f) x = pickle.load(f)
What the documentation does not tell you is that you need to open the file with a “binary” flag.
So some of you might get
write() argument 1 must be str, not bytes
All you need to do is add
f = open("myFile","wb")
The “b” character, tells python to open the file in a binary mode.
Same for reading! So if you are getting
read() from the underlying stream did notreturn bytes
make sure you did
f = open("myFile","rb")
If some of you are getting
TypeError: file must have a 'write' attribute
This means you sent the argument in a wrong order. Note the signature of “dump”
def dump(obj, file, protocol=None, *, fix_imports=True):
Make sure that you first send the object, then the file.