Which gives the error: AttributeError: ‘numpy.bool_’ object has no attribute ‘index’ Which looks like it is relating to the following line: Now I’m just wondering how this is meant to work, as the whole purpose of creating this list is to have a True/False indicator iterated across a data set depending on the rule of … Read more
You can use the Series.to_list method. For example: Output: To drop duplicates you can do one of the following:
Just replace return 0 by return 0, 0, or better: raise an error instead of returning 0 When your if condition is True, you only return 0. Then later, when you do agg, gps = get_grps(…), you tell python to unpack the result of the function. Then, python is expecting a 2-length iterable, and try to unpack it, but as it says: … Read more
Try this left_on : label or list, or array-like Field names to join on in left DataFrame. Can be a vector or list of vectors of the length of the DataFrame to use a particular vector as the join key instead of columns right_on : label or list, or array-like Field names to join on … Read more
sort() was deprecated for DataFrames in favor of either: sort_values() to sort by column(s) sort_index() to sort by the index sort() was deprecated (but still available) in Pandas with release 0.17 (2015-10-09) with the introduction of sort_values() and sort_index(). It was removed from Pandas with release 0.20 (2017-05-05).
sort() was deprecated for DataFrames in favor of either: sort_values() to sort by column(s) sort_index() to sort by the index sort() was deprecated (but still available) in Pandas with release 0.17 (2015-10-09) with the introduction of sort_values() and sort_index(). It was removed from Pandas with release 0.20 (2017-05-05).
The error comes up when you are trying to assign a list of numpy array of different length to a data frame, and it can be reproduced as follows: A data frame of four rows: Now trying to assign a list/array of two elements to it: Both errors out: ValueError: Length of values does not … Read more
I have a small DataFrame that I want to plot using pandas. I am still trying to learn plotting from within pandas . I want a plot In the above example when I say . I get the strangest error. While I understand that the DataFrame with its very lopsided values makes a very un-interesting … Read more
Pandas DataFrame columns are Pandas Series when you pull them out, which you can then call x.tolist() on to turn them into a Python list. Alternatively you cast it with list(x). Output:
For identifying NaN values use boolean indexing: Then for removing all non-numeric values use to_numeric with parameter errors=’coerce’ – to replace non-numeric values to NaNs: And for remove all rows with NaNs in column x use dropna: Last convert values to ints: