Why results of map() and list comprehension are different?
The following test fails:
Python
How to reverse a dictionary that has repeated values
I have a dictionary with almost 100,000 (key, value) pairs and the majority of the keys map to the same values. For example:
Python Pandas replicate rows in dataframe
If the dataframe looks like:
Difference Between Two Lists with Duplicates in Python
I have two lists that contain many of the same items, including duplicate items. I want to check which items in the first list are not in the second list. For example, I might have one list like this:
Matplotlib: Finding out xlim and ylim after zoom
you for sure know a fast way how I can track down the limits of my figure after having zoomed in? I would like to know the coordinates precisely so I can reproduce the figure with ax.set_xlim and ax.set_ylim.
I am using the standard qt4agg backend.
str.startswith with a list of strings to test for
I’m trying to avoid using so many if statements and comparisons and simply use a list, but not sure how to use it with str.startswith:
How do I assert the identity of a PyQt5 signal?
I’m in a situation where I want to assert the identity of a PyQt5 signal. Specifically, I want to check whether the clicked signal from a given QPushButton object is identical to a signal that is stored in a variable named signal. The following snippet illustrates the situation:
Get column index from column name in python pandas
In R when you need to retrieve a column index based on the name of the column you could do
Merging dictionary value lists in python
I’m trying to merge three dictionaries, which all have the same keys, and either lists of values, or single values.
Pandas: change data type of Series to String
I use Pandas ‘ver 0.12.0’ with Python 2.7 and have a dataframe as below: