109 lines
1.9 KiB
Markdown
109 lines
1.9 KiB
Markdown
# python-tests
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> Python tool: https://github.com/astral-sh/uv
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```shell
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uvx pycowsay 'hello world!'
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```
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```shell
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$ echo 'import requests; print(requests.get("https://astral.sh"))' > example.py
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$ uv add --script example.py requests
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Updated `example.py`
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```
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```shell
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$ uv run example.py
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Reading inline script metadata from: example.py
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Installed 5 packages in 12ms
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<Response [200]>
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```
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```shell
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uv run --python 3.12 https://git.hatter.ink/hatter/python-tests/raw/branch/main/leap_year.py
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```
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```shell
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uv run 'https://script.hatter.ink/@0/show_myip.py'
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```
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> https://developer.aliyun.com/mirror/pypi/
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`~/.pip/pip.conf`
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```ini
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[global]
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index-url = https://mirrors.aliyun.com/pypi/simple/
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[install]
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trusted-host=mirrors.aliyun.com
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```
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`~/.config/uv/uv.toml`
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```toml
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[[index]]
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url = "https://mirrors.aliyun.com/pypi/simple/"
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default = true
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```
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```shell
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pip install requests
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pip install cryptography
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```
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----
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```shell
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PYTHONPATH=./.venv/lib/python3.10/site-packages/ ./show_my_ip.py
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```
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<br>
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`show_myip.py`
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```python
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#! /usr/bin/env uv run
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# /// script
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# requires-python = ">=3.9"
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# dependencies = [
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# "requests>=2.32.5",
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# ]
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# ///
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import requests;
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IP_ACTION_URL = "https://hatter.ink/ip/ip.jsonp"
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if __name__ == "__main__":
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response = requests.get(IP_ACTION_URL, timeout=10)
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if response.status_code != 200:
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print("[ERROR]", response.status_code)
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else:
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response_json = response.json()
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print(response_json)
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print("Your IP is:", response_json['ip'])
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```
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```shell
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./show_myip.py
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```
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<br>
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在 Python 中，print() 函数默认会对输出进行缓存（buffering）。
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```python
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import time
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for i in range(5, 0, -1):
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# end="" 让它不换行，flush=True 强制立即刷新缓存
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print(f"\rcountdown: {i}", end="", flush=True)
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time.sleep(1)
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print("\ndone！")
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```
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通过设置环境变量也可以禁止缓存：
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```shell
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export PYTHONUNBUFFERED=1
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```
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