Recent questions tagged Pandas

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pandas - Calling python functions from *.py files from java and passing and returning

I want to call Python functions from *.py file from Java code and send arguments and receive return values from ... receiving map did not work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Python - Rolling window OLS Regression estimation

For my evaluation, I have a dataset found in this link (https://drive.google.com/drive/folders/ ... 't find any reference? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Folium Choropleth + GeoJSON raises AttributeError: 'NoneType'

I'm trying to do a choropleth using folium which offers a great link between GeoJSON, Pandas and leaflet. ... .insee' without any success. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Python: Plotting percentage in seaborn bar plot

For a dataframe import pandas as pd df=pd.DataFrame({'group':list("AADABCBCCCD"),'Values':[1,0,1 ... interested in plotting percentages. Thanks, See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Python: data argument can't be an iterator

I'm trying to replicate the code that is provided here: https://github.com/IdoZehori/Credit-Score/blob/ ... however the error still remains See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Concat python dataframes based on unique rows

My dataframe reads like : df1 user_id username firstname lastname 123 abc abc abc 456 def def def 789 ghi ghi ghi ... which I don't want here. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - concise way of flattening multiindex columns

Using more than 1 function in a groupby-aggregate results in a multi-index which I then want to flatten. ... 't handle multi-indexed columns. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - SKLearn MinMaxScaler - scale specific columns only

I'd like to scale some (but not all) of the columns in a Pandas dataFrame using a MinMaxScaler. How can I do it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Python - Rolling window OLS Regression estimation

For my evaluation, I have a dataset found in this link (https://drive.google.com/drive/folders/ ... 't find any reference? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Rename the less frequent categories by "OTHER" python

In my dataframe I have some categorical columns with over 100 different categories. I want to rank the categories ... should I proceed? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - PermissionError: Permission denied to reading CSV File in Python

Simply I wanted to read the csv file that I converted from Data Frame after read the another csv file and ... Any Help would be appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas merge dataframes by closest time

I've got two dataframes (logs and failures), which I would like to merge so that I add in logs a column ... , so efficiency is also a concern. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Convert datetime.datetime object to days since epoch in Python

I've got a pandas.Series object that might look like this: import pandas as pd myVar = pd.Series(["VLADIVOSTOK ... to do it. Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - How to convert dates to quarters in Python?

I would like to convert my date column into an indicator of the quarter of that particular year, say 2018q1 or ... 2013q3 s2 9/28/13 2013q3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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pandas - Python Data Frame: cumulative sum of column until condition is reached and return the index

I am new in Python and am currently facing an issue I can't solve. I really hope you can help me out. English ... same with column 3 and 4)]. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Convert datetime.datetime object to days since epoch in Python

I've got a pandas.Series object that might look like this: import pandas as pd myVar = pd.Series(["VLADIVOSTOK ... to do it. Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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pandas - How to convert dates to quarters in Python?

I would like to convert my date column into an indicator of the quarter of that particular year, say 2018q1 or ... 2013q3 s2 9/28/13 2013q3 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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pandas - Python Data Frame: cumulative sum of column until condition is reached and return the index

I am new in Python and am currently facing an issue I can't solve. I really hope you can help me out. English ... same with column 3 and 4)]. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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pandas - TypeError: can't multiply sequence by non-int of type 'float' (python 2.7)

I have a dataframe t_unit, which is the result of a pd.read_csv() function. datetime B18_LR_T B18_B1_T 24/03/2016 ... Do you have any idea why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.8k views

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pandas - python multiprocessing - OverflowError('cannot serialize a bytes object larger than 4GiB')

We are running a script using the multiprocessing library (python 3.6), where a big pd.DataFrame is passed as an ... know what to do? Thanks !! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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pandas - Extracting dataframes from a dictionary of dataframes

I have a directory containing many csv files which I have loaded into a dictionary of dataframes So, just 3 sample ... I am using python 3.5. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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pandas - Python: Combining Low Frequency Factors/Category Counts

There is a great solution in R. My df.column looks like: Windows Windows Mac Mac Mac Linux Windows ... I want ... and do so in an efficient way. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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pandas - Mapping Python dictionary with multiple keys into dataframe with multiple columns matching keys

I have a dictionary that I would like to map onto a current dataframe and create a new column. I ... .replace({'CountyType': county_type_dict) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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pandas - Python (NLTK) - more efficient way to extract noun phrases?

I've got a machine learning task involving a large amount of text data. I want to identify, and extract, noun- ... +unigram[1][0] in leaves] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

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pandas - get_dummies python memory error

I'm having a problem with a data set that has 400,000 rows and 300 variables. I have to get dummy variables for ... m using has 8 GB of memory. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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975 views

1 answer

pandas - How to assign count of unique values to the records in a data frame in python

I have a data frame like this: IP_address IP1 IP1 IP1 IP4 IP4 IP4 IP4 IP4 IP7 IP7 IP7 I would like to ... please direct me there. Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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960 views

1 answer

pandas - Portfolio rebalancing with bandwidth method in python

We need to calculate a continuously rebalanced portfolio of 2 stocks. Lets call them A and B. They shall both ... to make this question clearer? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

pandas - How to perform time series analysis that contains multiple groups in Python using fbProphet or other models?

All, My dataset looks like following. I am trying to predict the 'amount' for next 6 months using either the fbProphet or ... 6 2017-07-01 B 5.6 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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