dataframe tag

Pandas is mainly used for data analysis and associated manipulation of tabular data in Dataframes. Pandas allows importing data from various file formats such as comma-separated values, JSON, Parquet, SQL database tables or queries, and Microsoft Excel. Pandas allows various data manipulation operations such as merging, reshaping, selecting, as well as data cleaning, and data wrangling features. The development of pandas introduced into Python many comparable features of working with DataFrames that were established in the R programming language. The pandas library is built upon another library NumPy, which is oriented to efficiently working with arrays instead of the features of working on DataFrames.

Reference: WIKIPEDIA

63 questions


1 answers
86 views
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I can't make a repeat Receive one row each in a data frame, perform an operation, and assign one to a new list

I'm going to take one line from the data frame, calculate it, and assign it to the new list one by one.If you look at it, only the number of rows 0 and 12 changes, but I don't know how to make it into...

2 years ago

1 answers
69 views
0
I want to collect Python crawling results into a data frame and save them as an Excel file with to_csv

while True: print(Getting page {}....format(page)) params[page] = page data = requests.post(url, json=params).json() # # uncomment to see all data: # # print(json.dumps(data, indent=4)) if not d...

2 years ago

1 answers
65 views
0
I defined a function related to the data frame, but the actual data does not change.

In the Pandas data frame, we created a function to delete all the lower lines of a column when the value of a column appears nan.def shorter(df,column): for i in range(len(df)): if pd.isna(df[column]...

2 years ago
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