Map element from one list to all elements in a sub-list to form a list of tuples (coordinates) Question: I am trying to map each element[x] from list: rows to all elements of the sub-list[x] from another list: cols and the result should be a list of tuples. These 2 lists, rows and cols have …
How to import data form lists in a dictionary in Python? Question: I want to create a program that takes 3 different inputs and stores them in 3 separate lists and then be able to combine them in a dictionary and print on screen. So far I got this : size = input("Enter size of …
Write a program to read mbox-short.txt and figure out who has sent the greatest number of mail messages Question: File: http://www.py4e.com/code3/mbox-short.txt I had tried to filter the email addresses from this file but failed to filter the greatest number of mail messages. name = input("Enter file:") if len(name) < 1: name = "mbox-short.txt" handle = …
How do I access using Python Dict and List Question: Here I am giving two variables namely "a", "result". If "result" matches with any of the record in "a" in "city" then it should return entire record of the "a" variable. a = { "output": [ {"name": "India", "state": [ { "city": ["c", "d" ] …
Transform a dictionary into a list of tuples with Python Question: I want to transform a dictionary into a list of tuples, but doing it ‘row-wise’: the first tuple should cointain the first values, the second tuple the second values, and so on. I have some working code, but I wonder if there is a …
How to use a dictionary to standardize terminology across lists Question: I have been trying to solve this issue for a while but I can’t seem to think of a right solution. Basically, I am parsing few pdfs and depending on the source of the pdf, the terminology used is different. For example, source A1 …
Python Find matching item in a list of dictionaries Question: I have a big list of dictionaries. Each dictionary contains timeseries data of each sensor when each data point is collected. I want to know the index location of a specific sensor and date. So, I can update the sensor value. My code: big_list = …
Python: How can I iterate through and combine multiple dictionaries based off a common key:values? Question: I am attempting to take a list, full of multiple dictionaries, and combine those multiple dictionaries in new dictionaries. A couple small requirements are throwing me off however. I have values for a specific key which will show up …
How to get a list of dictionary in a single column of pandas dataframe Question: Hi I have a dataframe in 1NF form which I wanted to change to different format where I can access those values. This is how my dataframe looks like Code ProvType Alias spec_code 1A12 A Hi 1 1A12 B Hi …
Hill climbing algorithm with steps proportional to derivative? Question: I am writing a hill climbing algorithm where I want the step size to be proportional to the local derivative/gradient at a specific point. However, the algorithm seems to get stuck in a trough that I can’t really understand, for example given a starting point at …
