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add pdf merger tutorial · thomasxm/pythoncode-tutorials@c6c3a8c · GitHub

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add pdf merger tutorial
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‎README.md‎

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@@ -158,5 +158,6 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
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- [How to Convert PDF to Images in Python](https://www.thepythoncode.com/article/convert-pdf-files-to-images-in-python). ([code](handling-pdf-files/convert-pdf-to-image))
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- [How to Compress PDF Files in Python](https://www.thepythoncode.com/article/compress-pdf-files-in-python). ([code](handling-pdf-files/pdf-compressor))
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- [How to Encrypt and Decrypt PDF Files in Python](https://www.thepythoncode.com/article/encrypt-pdf-files-in-python). ([code](handling-pdf-files/encrypt-pdf))
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- [How to Merge PDF Files in Python](https://www.thepythoncode.com/article/merge-pdf-files-in-python). ([code](handling-pdf-files/pdf-merger))
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‎handling-pdf-files/pdf-merger/README.md‎

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# [How to Merge PDF Files in Python](https://www.thepythoncode.com/article/merge-pdf-files-in-python)
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To run this:
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- `pip3 install -r requirements.txt`
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-
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```
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$ python pdf_merger.py --help
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```
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**Output:**
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```
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usage: pdf_merger.py [-h] -i [INPUT_FILES [INPUT_FILES ...]] [-p [PAGE_RANGE [PAGE_RANGE ...]]] -o OUTPUT_FILE [-b BOOKMARK]
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Available Options
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optional arguments:
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-h, --help show this help message and exit
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-i [INPUT_FILES [INPUT_FILES ...]], --input_files [INPUT_FILES [INPUT_FILES ...]]
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Enter the path of the files to process
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-p [PAGE_RANGE [PAGE_RANGE ...]], --page_range [PAGE_RANGE [PAGE_RANGE ...]]
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Enter the pages to consider e.g.: (0,2) -> First 2 pages
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-o OUTPUT_FILE, --output_file OUTPUT_FILE
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Enter a valid output file
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-b BOOKMARK, --bookmark BOOKMARK
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Bookmark resulting file
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```
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- To merge `bert-paper.pdf` with `letter.pdf` into a new `combined.pdf`:
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```
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$ python pdf_merger.py -i bert-paper.pdf,letter.pdf -o combined.pdf
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```

‎handling-pdf-files/pdf-merger/bert-paper.pdf‎

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‎handling-pdf-files/pdf-merger/letter.pdf‎

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‎handling-pdf-files/pdf-merger/pdf_merger.py‎

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# Import Libraries
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from PyPDF4 import PdfFileMerger
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import os
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import argparse
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def merge_pdfs(input_files: list, page_range: tuple, output_file: str, bookmark: bool = True):
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"""
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Merge a list of PDF files and save the combined result into the `output_file`.
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`page_range` to select a range of pages (behaving like Python's range() function) from the input files
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e.g (0,2) -> First 2 pages
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e.g (0,6,2) -> pages 1,3,5
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bookmark -> add bookmarks to the output file to navigate directly to the input file section within the output file.
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"""
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# strict = False -> To ignore PdfReadError - Illegal Character error
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merger = PdfFileMerger(strict=False)
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for input_file in input_files:
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bookmark_name = os.path.splitext(os.path.basename(input_file))[0] if bookmark else None
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# pages To control which pages are appended from a particular file.
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merger.append(fileobj=open(input_file, 'rb'), pages=page_range, bookmark=bookmark_name)
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# Insert the pdf at specific page
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merger.write(fileobj=open(output_file, 'wb'))
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merger.close()
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def parse_args():
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"""Get user command line parameters"""
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parser = argparse.ArgumentParser(description="Available Options")
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parser.add_argument('-i', '--input_files', dest='input_files', nargs='*',
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type=str, required=True, help="Enter the path of the files to process")
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parser.add_argument('-p', '--page_range', dest='page_range', nargs='*',
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help="Enter the pages to consider e.g.: (0,2) -> First 2 pages")
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parser.add_argument('-o', '--output_file', dest='output_file',
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required=True, type=str, help="Enter a valid output file")
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parser.add_argument('-b', '--bookmark', dest='bookmark', default=True, type=lambda x: (
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str(x).lower() in ['true', '1', 'yes']), help="Bookmark resulting file")
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# To Parse The Command Line Arguments
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args = vars(parser.parse_args())
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# To Display The Command Line Arguments
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print("## Command Arguments #################################################")
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print("\n".join("{}:{}".format(i, j) for i, j in args.items()))
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print("######################################################################")
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return args
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if __name__ == "__main__":
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# Parsing command line arguments entered by user
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args = parse_args()
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# convert a single str to a list
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input_files = [str(x) for x in args['input_files'][0].split(',')]
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page_range = None
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if args['page_range']:
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page_range = tuple(int(x) for x in args['page_range'][0].split(','))
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# call the main function
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merge_pdfs(
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input_files=input_files, page_range=page_range,
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output_file=args['output_file'], bookmark=args['bookmark']
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)

‎handling-pdf-files/pdf-merger/requirements.txt‎

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PyPDF4==1.27.0

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