Karl Knechtel

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Karl Knechtel has asked 6 questions and find answers to 226 problems.

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Karl Knechtel questions

What causes `None` results from BeautifulSoup functions? How can I avoid "AttributeError: 'NoneType' object has no attribute..." with BeautifulSoup?
Telling __import__ where to look - am I stuck with sys.path?
Dealing with Option and Either types - idiomatic conversions?
"Flat is better than nested" - for data as well as code?
Why is math.factorial much slower in Python 2.x than 3.x?

Karl Knechtel answers

Decorated and wrapped function is not passing self to instance method
How can I properly hash dictionaries with a common set of keys, for deduplication purposes?
How can I use user input to choose a parameter name and an attribute name?
Why is 'not(True) * True' valid syntax, unlike 'True * not(True)'? [duplicate]
Why can't I call a function from another function using exec
How to capture error message in python that is not an exception?
What causes `None` results from BeautifulSoup functions? How can I avoid "AttributeError: 'NoneType' object has no attribute..." with BeautifulSoup?
How do I format a date and also pad it with spaces?
What other data structures are available in the C++ STL?
Python Byte doesn't print binary