... You need to read the Python Unicode HOWTO. This error is the very first example. Basically, stop using str to convert from unicode to encoded text / bytes. Instead, properly use .encode() to encode the string: p.agent_info = u' '.join((agent_c...

I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x . I need to write out a formatted string. The following doesn't work, but indicates what I'm trying to do. In this example, there are three %s tokens and the list ...

... Why this works? Since None is the sole singleton object of NoneType in Python, we can use is operator to check if a variable has None in it or not. Quoting from is docs, The operators is and is not test for object identity: x is y is true if and only if x and y are the same object. x is not...

...created here... # Saving the objects: with open('objs.pkl', 'w') as f: # Python 3: open(..., 'wb') pickle.dump([obj0, obj1, obj2], f) # Getting back the objects: with open('objs.pkl') as f: # Python 3: open(..., 'rb') obj0, obj1, obj2 = pickle.load(f) If you have a lot of data, you can...

... How can I create a copy of an object in Python? So, if I change values of the fields of the new object, the old object should not be affected by that. You mean a mutable object then. In Python 3, lists get a copy method (in 2, you'd use a slice to make a copy): &g...

...urn list(islice(iterable, n)) See it working online: ideone Update for Python 3.6 n_items = take(n, d.items()) share | improve this answer | follow | ...

... smtplib.SMTP does not send lists as to addresses. At least not on python 2.7.2 – LostMohican Apr 5 '12 at 8:06 ...

...e data using the base64 codec, and then write it to the filesystem. # In Python 2.7 fh = open("imageToSave.png", "wb") fh.write(img_data.decode('base64')) fh.close() # or, more concisely using with statement with open("imageToSave.png", "wb") as fh: fh.write(img_data.decode('base64')) Moder...

I have seen a few different styles of writing docstrings in Python, is there an official or "agreed-upon" style? 7 Answers ...

I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3] ? ...