the condition is the angle between two other angles Question: I have a vector from a certain point, and its angle, there are also lines described by two points. I need to find the points of intersection of a vector with lines. I calculated the intersection, through the equation of lines, but in this case …
How to check multiple conditions on dataframe columns, row by row, without using a loop Pandas Question: I have a big dataframe df that I need to clean from bad data using four different conditions: if the element of column A is a number if this number is different from nan if the element of …
How to delete just some rows in a dataframe according with some fields condition in Python? Question: I need to keep just the first row of a dataframe for each group of values in a ordered column. I need to transform this (first column is ordered by name): a = [[1,’a’],[1,’c’],[1,’b’],[2,’c’],[2,’b’],[2,’a’],[3,’d’]] into this (just the …
Why below code works when 2 conditions "==" but give empty list same code has 2 conditions "!="? Question: d1 = [{"name": "a", "author": "b", "read": False}, {"name": "c", "author": "b", "read": False}, {"name": "b", "author": "b", "read": False}] temp = [] for i in range(len(d1)): if d1[i][‘name’] != "a" and d1[i][‘author’] != "b": temp.append(d1[i]) …
Build expression for pandas loc to filter data using a certain column according to length of a list Question: I am pretty new to python programming and I want to use Pandas .loc to filter data using a certain column according to the length of a products’ list. I have the (condensed) list: products_selected = …
Check if two values are either in a dictionary as a key or in a list Question: I am not sure how to write a logic in the most pythonic way. I have 2 data types: d: Dict[str, Any] = {} l: List[str]: [] Now I want to write a condition where I check if …
How do I make a condition where if a user doesn't input an integer, it comes up with an error message? Question: I’m trying to code in a condition where if a user doesn’t input an integer, it comes up with an error message. I’m using if statements to generate this. How would I do …
Insert rows in Python dataframe with conditions Question: I have a large data file as shown below. Edited to include an updated example: I wanted to add two new columns (E and F) next to column D and move the suite # when applicable and City/State data in cell D3 and D4 to E2 and …
OR operation not working in removing string part Question: I’ve been trying to parse a string and to get rid of parts of the string using the remove() function. In order to find the part which I wanted to remove I used an OR operator. However, it does not produce the outcome I expected. Can …
pandas: merge strings when other columns satisfy a condition Question: I have a table: genome start end strand etc GUT_GENOME270877.fasta 98 396 + GUT_GENOME270877.fasta 384 574 – GUT_GENOME270877.fasta 593 984 + GUT_GENOME270877.fasta 991 999 – I’d like to make a new table with column coordinates, which joins start and end columns and looking like this: …
