Weekly Python StackOverflow Report: (clxxxiv) stackoverflow python report

These are the ten most rated questions at Stack Overflow last week.
Between brackets: [question score / answers count]
Build date: 2019-06-29 20:53:35 GMT

---

1. Why was p[:] designed to work differently in these two situations? - [29/6]
2. How do I create a new column in a dataframe from an existing column using conditions? - [11/5]
3. Anaconda 4.7.5 - Warning about conda-build <3.18.3 and issues with python packages - [10/3]
4. How to connect the ends of edges in order to close the holes between them? - [10/2]
5. Why is NumPy sometimes slower than NumPy + plain Python loop? - [9/3]
6. Find first and last non-zero column in each row of a pandas dataframe - [7/4]
7. Why does * work differently in assignment statements versus function calls? - [7/1]
8. How to vectorize a loop through a matrix numpy - [6/3]
9. Pandas expanding/rolling window correlation calculation with p-value - [6/2]
10. Using Pandas df.where on multiple columns produces unexpected NaN values - [6/1]

from Planet Python
via read more