Assuming the CSV file is delimited with commas, the simplest way using the csv module in Python 3 would probably be: You can specify other delimiters, such as tab characters, by specifying them when creating the csv.reader: For Python 2, use open(‘testfile.csv’, ‘rb’) to open the file.[
You need to replace open with urllib.urlopen or urllib2.urlopen. e.g. This would output the following The original question is tagged “python-2.x”, but for a Python 3 implementation (which requires only minor changes) see below.
Consider the following expressions: They’re equivalent. In the same way, with a statement: are also equivalent. Notice that if you change your print function to: You’ll notice a difference between python 2 and python 3. With python 2, the (…,…) is interpteted as a tuple since print is a statement whereas in python 3, it’s a function … Read more
You can simply check whether the multisets with the elements of x and y are equal: This requires the elements to be hashable; runtime will be in O(n), where n is the size of the lists. If the elements are also unique, you can also convert to sets (same asymptotic runtime, may be a little … Read more
There’s not really any “raw string“; there are raw string literals, which are exactly the string literals marked by an ‘r’ before the opening quote. A “raw string literal” is a slightly different syntax for a string literal, in which a backslash, \, is taken as meaning “just a backslash” (except when it comes right … Read more
So I am working on an iPhone app that requires a socket to handle multiple clients for online gaming. I have tried Twisted, and with much effort, I have failed to get a bunch of info to be sent at once, which is why I am now going to attempt socket. My question is, using … Read more
Yes, the 0-argument syntax is specific to Python 3, see What’s New in Python 3.0 and PEP 3135 — New Super. In Python 2 and code that must be cross-version compatible, just stick to passing in the class object and instance explicitly. Yes, there are “backports” available that make a no-argument version of super() work … Read more
I am trying to get a deeper understanding to how for loops for different data types in Python. The simplest way of using a for loop an iterating over an array is as I also know that I can What I would like to know is what this does or And what happens if I … Read more
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: or work entirely in unicode.
Try list(newdict.keys()). This will convert the dict_keys object to a list. On the other hand, you should ask yourself whether or not it matters. The Pythonic way to code is to assume duck typing (if it looks like a duck and it quacks like a duck, it’s a duck). The dict_keys object will act like a list for most purposes. … Read more