A class’s static initialization normally happens immediately before the first time one of the following events occur: an instance of the class is created, a static method of the class is invoked, a static field of the class is assigned, a non-constant static field is used, or for a top-level class, an assert statement lexically … Read more
You opened the file in binary mode: with open(fname, ‘rb’) as f: This means that all data read from the file is returned as bytes objects, not str. You cannot then use a string in a containment test: if ‘some-pattern’ in tmp: continue You’d have to use a bytes object to test against tmp instead: … Read more
The answer I’d previously accepted didn’t work. It still waited for responses. This does work though, taken from How do I make an asynchronous GET request in PHP? function post_without_wait($url, $params) { foreach ($params as $key => &$val) { if (is_array($val)) $val = implode(‘,’, $val); $post_params[] = $key.’=’.urlencode($val); } $post_string = implode(‘&’, $post_params); $parts=parse_url($url); $fp … Read more
Iterate manually, using the condition to select a list to which each element will be appended: good, bad = [], [] for x in mylist: (bad, good)[x in goodvals].append(x)
Try adding animation-fill-mode: forwards;. For example, the shorthand would be used like this: -webkit-animation: bubble 1.0s forwards; /* for less modern browsers */ animation: bubble 1.0s forwards;
In Python, this: my_object.method(“foo”) …is syntactic sugar, which the interpreter translates behind the scenes into: MyClass.method(my_object, “foo”) …which, as you can see, does indeed have two arguments – it’s just that the first one is implicit, from the point of view of the caller. This is because most methods do some work with the object … Read more
Here is how you would do this with a nested list comprehension: [[float(y) for y in x] for x in l] This would give you a list of lists, similar to what you started with except with floats instead of strings. If you want one flat list, then you would use [float(y) for x in … Read more
On Python ≥ 3.5, use pathlib.Path.mkdir: from pathlib import Path Path(“/my/directory”).mkdir(parents=True, exist_ok=True) For older versions of Python, I see two answers with good qualities, each with a small flaw, so I will give my take on it: Try os.path.exists, and consider os.makedirs for the creation. import os if not os.path.exists(directory): os.makedirs(directory) As noted in comments … Read more
Try using: <meta http-equiv=”refresh” content=”0; url=http://example.com/” /> Note: Place it in the <head> section. Additionally for older browsers if you add a quick link in case it doesn’t refresh correctly: <p><a href=”http://example.com/”>Redirect</a></p> Will appear as Redirect This will still allow you to get to where you’re going with an additional click.
Simply try converting it to an int and then bailing out if it doesn’t work. try: val = int(userInput) except ValueError: print(“That’s not an int!”) See Handling Exceptions in the official tutorial.