Meteor - Blaze asynchronous helper handling

 {{#let data = (helper_name 'value1' 'value2')}}

    {{#if @pending 'data'}}

        Loading message here... 

    {{/if}}

    {{#if @rejected 'data'}}

        Error message here... 

    {{/if}}

    {{#if @resolved 'data'}}

        Your data-dependent content here...

    {{/if}}

{{/let}}

Python - Upgrade existing pip package

pip install --upgrade package_name

Python - List all pip packages and filter for a given one

 pip list | grep package_name

Python - Check if a given library is installed or not

python -c "import library_name; print(librar_name.__file__)"

Python - Automatic installation of all pip packages in requirements.txt

pip install -r pip_requirements.txt

Python - Anaconda automatic installation of all requirements

conda install --file conda_requirements.txt

Python - Conda active environment check and setup

conda activate parser3

which python

python -m site

which -a python