nathforge

expbackoff() {
    # Exponential backoff: retries a command upon failure, scaling up the delay between retries.
    # Example: "expbackoff my_command --with --some --args --maybe"
    local MAX_RETRIES=${EXPBACKOFF_MAX_RETRIES:-8} # Max number of retries
    local BASE=${EXPBACKOFF_BASE:-1} # Base value for backoff calculation
    local MAX=${EXPBACKOFF_MAX:-300} # Max value for backoff calculation
    local FAILURES=0
    while ! "$@"; do
        FAILURES=$(( $FAILURES + 1 ))
        if (( $FAILURES > $MAX_RETRIES )); then

nathforge

import colorsys

def get_dominant_color(image):
    """
    Find a PIL image's dominant color, returning an (r, g, b) tuple.
    """
    
    image = image.convert('RGBA')
    
    # Shrink the image, so we don't spend too long analysing color

nathforge

class RGBColor(object):
    def __init__(self, value):
        """
        A representation of an RGB color, allowing color manipulation.
        
        Can take values in the form of strings, integers,
        three-element iterables, or another RGBColor object.
        
        
        >>> print RGBColor('#FFF')