coverage -e -x foo.py
coverage run foo.py
coverage run --timid foo.py
coverage foo.py


commands:

    run -x
            --timid                 bool
        -p  --parallel              bool
        -L  --stdlib                bool
            --branch                bool                    *
        -a  --append                bool

    erase -e
    
    combine -c
    
    report -r 
        -m --missing                bool
        -i --ignore-errors          bool
        -o --omit                   list of string
        
    annotate -a
        -d --output-directory       string
        -i --ignore-errors          bool
        -o --omit                   list of string
    
    html -b
        -d --output-directory       string
        -i --ignore-errors          bool
        -o --omit                   list of string
        --red *
        --green *
        --style *

    help

    byteprep   *
    
    cobertura   *
    
    
    
Option scopes:

    - Cmd line
    - coverage()
    - ini file
    - environment variable
