// full error message
WARNING: You are using pip version 19.2.3, however version 20.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
// run
python -m pip install --upgrade pip --user --trusted-host files.pythonhosted.org --trusted-host pypi.orgCould not fetch URL https://pypi.org … There was a problem confirming the ssl certificate.
// Full error message
Could not fetch URL https://pypi.org/simple/autopep8/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='some.host.net', port=444): Max retries exceeded with url: /?cfru=aHR0cHM6Ly9weXBpLm9yZy9zaW1wbGUvYXV0b3BlcDgv (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)'))) - skipping
// This could mean there is no local certificate to read from. See this postCould not install packages due to an EnvironmentError [Error 13] Permission denied:
// error message when installing a pip package
ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: 'C:\\Python38\\Lib\\site-packages\\__pycache__\\pycodestyle.cpython-38.pyc'
Consider using the `--user` option or check the permissions.
// just add --user to the command. ex:
python -m pip install autopep8 --user --trusted-host files.pythonhosted.org --trusted-host pypi.orgCall API from Python
import requests
import urllib3
# suppress the HTTPS warnings in terminal
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
# BEGIN
session = requests.Session()
session.verify = False
url = "https://some.url.com?param1=something¶m2=something"
headers = {'content-type': 'application/json', 'Accept-Charset': 'UTF-8'}
# call the HTTP endpoint
httpResult = session.get(url, headers=headers)
print(httpResult.text)
# some extra details
elapsedSeconds = httpResult.elapsed.total_seconds()
statusCode = httpResult.status_codeConvert Python to Exe
#Install if needed
pip install pyinstaller
#Generate exe
C:/>pyinstaller -w -F myfile.pyCross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at . (Reason: CORS request did not succeed)
from flask_cors import CORS
app = Flask(__name__)
CORS(app)Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘SSLError(SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)’),)’: /simple/pylint/ >>>>>>>> Could not fetch URL https://pypi.python.org/simple/setuptools/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host=’pypi.python.org’, port=443): Max retries exceeded with url: /simple/setuptools/ (Caused by SSLError(SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)’),)) – skipping
// add the following flag to the pip command:
--trusted-host files.pythonhosted.org --trusted-host pypi.org// or wherever the error indicates a problem in
<error message>... HTTPSConnectionPool(host='pypi.python.org', port=443)format curl json
curl -X GET "http://api/path" -H "accept: application/json" | python -mjson.toolInstall Python tkinter
sudo apt-get install python3-tkInstall GPIO Python library
//Install pip:
sudo apt-get install python3-pip
// Install necessary libraries
//Option1: From text file
python3 -m pip install -r pip-commands.txt
// file contents
setuptools
RPi.GPIO
gpiozero
RPIO
pigpio
//Option2:
python3 -m pip install setuptools
python3 -m pip install RPi.GPIO
python3 -m pip install gpiozero
python3 -m pip install RPIO
python3 -m pip install pigpioInstall imagetk Python package
sudo apt-get install python3-pil.imagetk