Installing lxml module in python
Just do: For Python 2 (e.g., required by Inkscape): If you are planning to install from source, then albertov’s answer will help. But unless there is a reason, don’t, just install it from the repository.
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While else statement equivalent for Java?
The closest Java equivalent is to explicitly keep track of whether you exited the loop with a break… but you don’t actually have a break in your code, so using a while-else was pointless in the first place. For Java folks (and Python folks) who don’t know what Python’s while-else does, an else clause on a while loop executes if the loop ends without … Read more
How to get POSTed JSON in Flask?
First of all, the .json attribute is a property that delegates to the request.get_json() method, which documents why you see None here. You need to set the request content type to application/json for the .json property and .get_json() method (with no arguments) to work as either will produce None otherwise. See the Flask Request documentation: … Read more
Modular multiplicative inverse function in Python
Python 3.8+ Python 3.7 and earlier Maybe someone will find this useful (from wikibooks):
Find all files in a directory with extension .txt in Python
You can use glob: or simply os.listdir: or if you want to traverse directory, use os.walk:
mport win32ui in python 3.6
pywin32 doesn’t expose a module named pywin32. Instead, it separates out into multiple modules that map to various parts of the Windows API. So for you, the import statements should look like:
Undefined variable error in function
corpus is not defined in global scope, so you are getting error. you can use like this, or
Simplify Chained Comparison
In Python you can “chain” comparison operations which just means they are “and”ed together. In your case, it’d be like this: Reference: https://docs.python.org/3/reference/expressions.html#comparisons
What is a mixin, and why are they useful?
A mixin is a special kind of multiple inheritance. There are two main situations where mixins are used: You want to provide a lot of optional features for a class. You want to use one particular feature in a lot of different classes. For an example of number one, consider werkzeug’s request and response system. … Read more
bash: syntax error near unexpected token `(‘ – Python
Are you typing this at the unix command prompt? You should be doing this inside the python environment, ie. type python at the prompt and work from there. Also, no ; needed at the end of the line in Python