Current df: I have the df with Date and a float number. Date is the index and is unique. I would like to create a new df based on the dates found in the next df. I expect to get: In other word I want to filter the initial df and find all rows between all the dates found in
Tag: date
add_datepart( ) produces KeyError
I’m trying to split a date column in a pandas data frame using add_datepart( ). However, running trainingSetFirstCycle = add_datepart(trainingSetFirstCycle, trainingSetFirstCycle.date, drop=True) returns this error message: I checked the documentation to see what I’d done wrong. In the example shown, the definition of the data frame includes a dictionary consisting of the column name “date” and a list containing its
Get the last day of a year
I have a pandas df with a year column. I want to get the last day of that year. For example: 2020 –> 2020/12/31 I tried: but I get this error: “cannot convert the series to <class ‘int’> ” What am I doing wrong? Thanks PS I realized I could just do: but I’m still wondering what was wrong in
Pandas conditional counting by date
I want to count all orders done by each customer at each order date, to find out how many orders were done at the time of each order. Input: Expected output: The following code works but is extremely slow. Taking upwards of 10 hours for 100k+ rows. There is certainly a better way. Answer Try sort_values to get dates in
Can anyone give me a function to calculate date and time in python ? I m in WINDOWS 10
Please can anyone provide me function for time,date & day in python just like time = time() and time = “##:##:##” # is replaced with current time in my laptop And date = date() and date = “####/##/##” And day = day() and day = “sun/mon/tue/wed/etc” Answer
Splitting a date string within a Nested List to group lists by the month – Python
This is a homework assignment. I am not allowed to use libraries etc. The purpose is to learn and understand nested lists, loops and filtering by conditionals in Python. I have a nested list of data, a short extract is below. It is 200 lines long. I need to be able to filter the list by gender and the month.
IllegalMonthError in Python datefinder
I am trying to extract dates from email texts using datefinder python library. Below is a the code snippet of what I am trying to do. datefinder tries to construct all the numbers in the email to dates. I get lot of false positives. I can remove those using some logic. But i get IllegalMonthError in some email and i
Dash Dynamic Dropdown with Custom Option
I’m trying to create a dropdown menu that says ‘today’, ‘yesterday’, ‘last 7 days’ and ‘custom’. I want the calendar to automatically update when I choose an option in the dropdown menu. For ‘custom’ I want to pull the calendar so I can choose any dates I want. Here’s the sample code: The dropdown and calendar show up on that
How to convert a whole column from string type to date type in mongodb with pymongo
My data consist of 1million rows. A sample look like this: The thing is that date2 and date4 are in the form that i want but they are string and i want to convert them to date. The code i have used look like this: Do i need to convert them before inserting or after? Does anyone know how i
How to sort pandas dataframe in ascending order using Python
I have a dataframe like this : Columns’ types with print(df.dtypes) : Expected Output : I have a dataframe like df. When I do : But nothing happen even by adding ascending = True or False. Could you give the way pls to order this dataframe as above ? If possible can you give the 2 possibilites like ordering by