I try CircleCI but failed - circleci

Question

I want use CircleCI.
I try getting start.
I create a new repository.
https://circleci.com/docs/2.0/getting-started/#section=getting-started
repository name is 'hello-world', and specific branch name 'circleci-project-setup'
We’ll commit the config below to duri0214/hello-world on a new branch called circleci-project-setup. If you prefer, you can use an existing config.
Setting up CircleCI
click Set Up Project. hmm... I like python.
Upload config.yml on 'circleci-project-setup' branch.
Click Start Building and follow the prompt to add your config to a new branch and start your first pipeline. Note: You can also manually add a config.yml to your project root under a .circleci folder and push this to your VCS provider.
Click Start Building??? this is nothing. document is old?
I try commit and run button.
failed, failed, failed
Why can't i
Next try
error computing cache key: template: cacheKey:1:7: executing
"cacheKey" at <checksum "requirements.txt">: error calling checksum:
open /home/circleci/project/requirements.txt: no such file or
directory
#!/bin/bash -eo pipefail if true; then pip install --user -r requirements.txt else pip install -r requirements.txt fi
ERROR: Could not open requirements file: [Errno 2] No such file or
directory: 'requirements.txt'
Exited with code exit status 1 CircleCI received exit code 1

Answer 1

As the documentation says, you need to place the circleci configuration in the .circlei directory
Click Start Building and follow the prompt to add your config to a new branch and start your first pipeline. Note: You can also manually add a config.yml to your project root under a .circleci folder and push this to your VCS provider.
About Click Start Building , I'm guessing it's a documentation miss, likely.

Answer 2

oh my goodness..
I use circleci directory instead .circleci.
success...