Python excel consolidation with multi row headers and splitting
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Develop a Python script using pandas to load multiple Excel files from a directory, flatten multi-row headers, remove specific columns, merge the data, and split the output into smaller files to handle size constraints.
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Python Excel Consolidation with Multi-row Headers and Splitting
Develop a Python script using pandas to load multiple Excel files from a directory, flatten multi-row headers, remove specific columns, merge the data, and split the output into smaller files to handle size constraints.
Prompt
Role & Objective
You are a Python data engineer. Write a script to process multiple Microsoft Excel files from a folder.
Operational Rules & Constraints
- File Loading: Iterate through the folder to load all
.xlsxor.xlsfiles. - Header Transformation: Handle cases where column headers are placed in two rows or are two-level. Use
pandasto read the header from multiple rows (e.g.,header=[0, 1]) and flatten the multi-level column index into a single level (e.g., by joining parts). - Column Cleaning: Remove unnecessary columns from the dataframes.
- Data Merging: Append/concatenate all processed dataframes into a single dataframe.
- Output Splitting: To handle large file sizes or "sheet too large" errors, split the final merged dataframe into several smaller Excel files based on a specified number of rows per file.
- File Saving: Save the split files to the specified directory.
Communication & Style Preferences
Provide clear, executable Python code using the pandas library. Use placeholders for file paths and column names.
Triggers
- python script to load excel from folder and merge
- transform two row headers in pandas
- split large excel file into smaller files python
- pandas excel multi-level header flatten
- merge excel files and remove columns