运行evaluate.py提示缺少--in-path和--out-path参数的解决方法

Let's break down what's causing this error and how to fix it quickly:

The Root Cause: Malformed Command Syntax #

Looking at your command line input:

python3 evaluate.py --checkpoint ./rain-princess.ckpt --in-path/Users/hassan/Downloads/fast-style-transfer-master--out-path ./output_image.jpg

Two critical syntax mistakes are tripping up the argument parser:

• You didn't add a space between --in-path and your input directory path. The parser sees --in-path/Users/... as a single invalid argument instead of recognizing --in-path and its corresponding value.
• There's no space between your input path and --out-path either, which further confuses the parser about where one parameter ends and the next begins.

Corrected Command #

Here's the fixed version of your command (note the spaces around each parameter flag):

python3 evaluate.py --checkpoint ./rain-princess.ckpt --in-path /Users/hassan/Downloads/fast-style-transfer-master --out-path ./output_image.jpg

Let's verify each part:

• --checkpoint ./rain-princess.ckpt: Correctly points to your model checkpoint (assuming this file exists in your current working directory)
• --in-path /Users/hassan/Downloads/fast-style-transfer-master: Properly specifies your input directory (with a space after the flag)
• --out-path ./output_image.jpg: Correctly sets the output image path (again, space after the flag)

Checking File Placement (Your Original Suspicions) #

If you still run into issues after fixing the command, here's how to confirm file placement:

• Verify the checkpoint file: Run ls ./rain-princess.ckpt in your terminal. If it returns "No such file or directory", you'll need to provide the full path to the .ckpt file (e.g., --checkpoint /path/to/your/rain-princess.ckpt).
• Check the input path: Ensure /Users/hassan/Downloads/fast-style-transfer-master is a valid directory with images you want to process. You can test this with ls /Users/hassan/Downloads/fast-style-transfer-master.
• Confirm write permissions: Make sure your user has permission to write to the ./output_image.jpg location. If not, use a different output path (like --out-path ~/Desktop/output_image.jpg).

Quick Test to Validate #

To rule out other issues, try running the simplest valid command first:

python3 evaluate.py --checkpoint ./rain-princess.ckpt --in-path ./test-input.jpg --out-path ./test-output.jpg

Just place a test image named test-input.jpg in your current working directory to see if the script runs successfully.

内容的提问来源于stack exchange，提问作者S J