Articles, notes and random thoughts on Software Development and Technology
To ssh into AWS ec2 instances the default user id is usually ‘ec2-user’ (see my ec2 ssh checklist here).
Lightsail vps instances appear to use different default userids, depending on the OS. For example, for an Ubuntu Lightsail instance the default ssh userid is ‘ubuntu’:
ssh -i path-to-your-ssh-pen-file ubuntu@your-instance-ip
Given typical JSON of car models like this:
json_data = """{
"cars": [
{
"manufacturer": "ford",
"model": "mondeo"
},
{
"manufacturer": "vaushall",
"model": "corsa"
}
]
}"""
To filter matching cars by manufacturer in Python, use:
result = [car for car in json_data['cars'] if(car['manufacturer'] == "ford")]
Discussed in answers here.
To document individual functions in Python, use a docstring like this:
def example_function():
"""Performs xyz
More details here
"""
Discussed in answers here.
Flask by default runs on port 8000. TO run on a different port use:
python3 -m flask --app your-flask-app run -p 3000
From here.