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I have up to 8 seperate Python processes creating temp files in a shared folder. Then I'd like the controlling process to append all the temp files in a certain order into one big file. What's the quickest way of doing this at an os agnostic shell level?
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To merge all excel files in a folder, use the Glob module and the append() method. Note − You may need to install openpyxl and xlrd packages.
Python provides the ability to open as well as work with multiple files at the same time. Different files can be opened in different modes, to simulate simultaneous writing or reading from these files. An arbitrary number of files can be opened with the open() method supported in Python 2.7 version or greater.
Just using simple file IO:
# tempfiles is a list of file handles to your temp files. Order them however you like f = open("bigfile.txt", "w") for tempfile in tempfiles: f.write(tempfile.read()) That's about as OS agnostic as it gets. It's also fairly simple, and the performance ought to be about as good as using anything else.
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