join

Defining a new column based on non null values in other columns

Defining a new column based on non null values in other columns Question: I working with two tables that I performed an outer join on. Below is the table. I want to create a column called Job Number which looks at the Job Number Salesforce and Job Number Coins columns and returns which ever one …

Total answers: 1

Join pandas dataframe by strg-pattern

Join pandas dataframe by strg-pattern Question: I have a question about a merge of two pd.dataframes based on a strg-pattern in a column. There are some very helpful discussions on stackoverlow and I found an approach (Merge two dataframe if one string column is contained in another column in Pandas) that fits to my requirements …

Total answers: 1

convert list to string using join

convert list to string using join Question: I was trying to convert the below tags column to normal string without the brackets and commas and tried the below two ways but I’m getting error. can someone tell a correct way Error: can only join an iterable Asked By: Jutika Patil || Source Answers: If there …

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Python joining strings fails

Python joining strings fails Question: I have an odd problem with my code and cannot find the mistake. I am trying the reverse names in "SURNAME, First Names, Religious Title" format to "First Names Surname" and have written the following lines of code: try: for x in range(0, df_length): print(df_length – x) e_df=df.iloc[[x]].fillna("@") # virtual …

Total answers: 1

Is it possible to join reference data into a nested dict in a pandas dataframe?

Is it possible to join reference data into a nested dict in a pandas dataframe? Question: I am trying to join two pandas data frames – the "left" table, which contains a column with a complex type (an array of dicts) and the "right" table is a flat reference table. pseudo table representation of these …

Total answers: 2

How to left join numpy array python

How to left join numpy array python Question: What’s the numpy "pythonic" way to left join arrays? Let’s say I have two 2-D arrays that share a key: a.shape # (20, 2) b.shape # (200, 3) Both arrays share a common key in their first dimension: a[:, 0] # values from 0..19 b[:, 0] # …

Total answers: 1

How to join different dataframe with specific criteria?

How to join different dataframe with specific criteria? Question: In my MySQL database stocks, I have 3 different tables. I want to join all of those tables to display the EXACT format that I want to see. Should I join in mysql first, or should I first extract each table as a dataframe and then …

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Python Pandas Join doesnt work unexpected argument

Python Pandas Join doesnt work unexpected argument Question: import pandas as pd df1 = pd.read_csv("sdvsdvsvsd.csv") df2 = pd.read_csv("dsvsdvdv.csv") df3 = df1.join(df2, how=’inner’, left_on = ‘TIME’, right_on = ‘TIME’) I created a joint but when I run it, I get a message"unexpected argument". I checked it multiple times and cant see any misstake. beginner here, please …

Total answers: 2