Given that an Excel file contains some cells protected with passwords, I want to detect these protected cells to choose whether to include them in the inputs or skip them. I have tried pandas and openpyxl However, the protected cells are read normally like other unprotected cells and could be easily changed. …
Tag: pandas
pandas.Dataframe equivalent for Pandas.read_csv converters?
This discussion covers the differences between dtypesand converters in pandas.read_csv function. I could not find an equivalent to converters for the pandas.DataFrame constructor in the documentation. If I build a dataframe directly from a list of lists, what would be the best way to mimic the same behavior? …
How to call multiple column of DataFrame on both axis for plot
My dataFrame has the following column, which shows pressure and corresponding volume measured for different samples, e.g. s_1p: pressure for sample-1 & s1_nv: corresponding volume for the same sample. I want to show all volume columns on the x-axis and pressure on the y-axis of the same plot (not sub-plot…
Remove leading zeroes pandas
For example I have such a data frame And I need to remove all leading zeroes and replace NONEs with zeros: I did it with cycles but for large frames it works not fast enough. I’d like to rewrite it using vectores Answer you can try str.replace
Simple example of Pandas ExtensionArray
It seems to me that Pandas ExtensionArrays would be one of the cases where a simple example to get one started would really help. However, I have not found a simple enough example anywhere. Creating an ExtensionArray To create an ExtensionArray, you need to Create an ExtensionDtype and register it Create an E…
combine pd.loc and pd.iloc to assign value
My input: I try assign new value based on other column in this way it work: dd.loc[dd.iloc[:,1]==0,[‘result_’+cv_detail[0]] ] = ‘Other’ OR dd.loc[dd.sum_result_ICV == 0, “result_ICV”] = ‘Other’ But this code doesn’t, code make more columns, with assign new…
How to merge 2 dataframe by date and time in python pandas?
I want to match certain parts of 2 dataframes by date and time and merge them into one of them. But my code is not working. I have 2 dataframe df and df2. First is df and second is df2. What can I do for this? I want to add Weather, Temp, Feels and after that to df. here is
Adding date to pd.to_datetime
I’m looking for a way to add custom date to pd.to_datetime. So, for example: Print: pd.to_datetime keeps adding today’s date which is fine in case of csv_file but csv_file2 need to contain tomorrow’s date. Here’s sample of csv files: Answer Idea is create helper column file for disting…
Python Pandas drop_duplicates – adds a new column and row to my data frame
I read a csv file and I want to remove duplicate entries. When I run the commands to do that, it creates a new first row that contains column numbers and a new column that contains row numbers. See Why does it do that and how should I fix this? Answer Use df.to_csv(file, header=False, index=False) to save the…
How to read 24:00 hour?
I have a csv file with 24:00 hour instead of 00:00 and try to read it with pandas. I found solution and try to adopt it. The problem is, I get an error and don’t know how to fix it. Can someone help me? My csv: The code I got from the link above adopted to my case: The error