How to Use Files During Code Execution？

[RollingDonkeyX]

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I want to add a code execution phase to the workflow orchestration to parse and retrieve files uploaded by users. But I called the input file variable and printed out no file address found. What am I supposed to do?


I print out arg1 as follows

[RollingDonkeyX]

I expect files to be sent to the back end for processing