インストール

apt install python3 nginx-full fcgiwrap

nginxの設定

vi /etc/nginx/conf.d/fcgiwrap.conf

中身

server {
    listen 80;
    listen [::]:80;

    server_name cgitest;
    set $base /home/あなたのhome/DocumentRoot;
    root $base/cgitest;

location ~ \.py$ {
    gzip off;
    include fastcgi_params;
    fastcgi_pass unix:/var/run/fcgiwrap.socket;
    fastcgi_index index.py;
fastcgi_param DOCUMENT_ROOT     $realpath_root;
    fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
    }
}

再読込

service nginx restart
service fcgiwrap restart

スクリプトに実行権限を与えておこう

mkdir ~/htdocs
vi test.py 
chmod +x test.py

test.py

#!/usr/bin/python3
print("HTTP/1.0 200 OK")
print("Content-type: text/html\n\n")
print("")
print("Hello world")

domainを通す

vi /etc/hosts

127.0.0.1 cgitest

ブラウザで
http://cgitest/test.py
を開けば問題ないでしょう

query(パラメタ)とPOST

url?foo=bar とかPOSTは以下の通り。

test.py

#!/usr/bin/python3
import urllib.parse

print("HTTP/1.0 200 OK")
print("Content-type: text/html\n\n")
print("")
print("url?var=foo <br>")
getquery = os.environ.get('QUERY_STRING')
print(getquery)
query = urllib.parse.parse_qs(getquery)
print(query)
print("post <br>")
posted = input()
print(posted)
print(urllib.parse.parse_qs(posted))

curlテスト

# curl -X POST -d "eee=uuu" -d "aaa=bbbb"  "http://cgitest/test/removeimage.py?py=aa&chin=5"


url?var=foo <br>
py=aa&chin=5
{'py': ['aa'], 'chin': ['5']}
post <br>
eee=uuu&aaa=bbbb
{'eee': ['uuu'], 'aaa': ['bbbb']}

Ref

http://ekzemplaro.org/data_base/doc/web_server/nginx/
https://stackoverflow.com/questions/16253036/python-on-nginx-using-fcgiwrap-upstream-closed-prematurely-fastcgi-stdout-whil
https://qiita.com/gam0022/items/d16cc83a32c5c2efdefc
https://note.nkmk.me/python-urllib-parse-query-string/
https://www.setouchino.cloud/blogs/33#part-5b2df4e0f04afe49