import csv

recipes = {}
tolerance = 0

def append_ignore_none(dictionary, key, value):
    if key in dictionary:
        dictionary[key].add(value)
    else:
        dictionary[key] = {value}

with open('rec.csv') as csvfile:
    reader = csv.reader(csvfile)
    for row in reader:
        append_ignore_none(recipes, row[0], row[1])

dependents = {}

for kleft, vleft in recipes.items():
    for kright, vright in recipes.items():
        if kleft != kright and vleft.issuperset(vright):
            needed_items = vleft.symmetric_difference(vright)
            if len(needed_items) <= tolerance:
                if len(needed_items) != 0:
                    print("Factory of {0} can also produce {1}, just add {2}".format(kleft, kright, ",".join(needed_items)))
                else:
                    print("Factory of {0} can also produce {1}".format(kleft, kright))

Factory of logistic-chest-storage can also produce logistic-chest-requester
Factory of logistic-chest-storage can also produce logistic-chest-active-provider
Factory of logistic-chest-storage can also produce logistic-chest-passive-provider
Factory of empty-barrel can also produce steel-chest
Factory of piercing-shotgun-shell can also produce big-electric-pole
Factory of piercing-shotgun-shell can also produce piercing-bullet-magazine
Factory of piercing-shotgun-shell can also produce heavy-armor
Factory of piercing-shotgun-shell can also produce medium-electric-pole
Factory of logistic-chest-requester can also produce logistic-chest-storage
Factory of logistic-chest-requester can also produce logistic-chest-active-provider
Factory of logistic-chest-requester can also produce logistic-chest-passive-provider
Factory of productivity-module can also produce effectivity-module
Factory of productivity-module can also produce speed-module
Factory of iron-gear-wheel can also produce pipe
Factory of iron-gear-wheel can also produce iron-chest
Factory of iron-gear-wheel can also produce iron-stick
Factory of iron-gear-wheel can also produce basic-bullet-magazine
Factory of iron-gear-wheel can also produce steel-plate
Factory of iron-gear-wheel can also produce basic-armor
Factory of big-electric-pole can also produce piercing-shotgun-shell
Factory of big-electric-pole can also produce piercing-bullet-magazine
Factory of big-electric-pole can also produce heavy-armor
Factory of big-electric-pole can also produce medium-electric-pole
Factory of chemical-plant can also produce pumpjack
Factory of player-port can also produce basic-inserter
Factory of player-port can also produce rocket-launcher
Factory of player-port can also produce radar
Factory of player-port can also produce basic-mining-drill
Factory of player-port can also produce assembling-machine-1
Factory of pipe can also produce iron-gear-wheel
Factory of pipe can also produce iron-chest
Factory of pipe can also produce iron-stick
Factory of pipe can also produce basic-bullet-magazine
Factory of pipe can also produce steel-plate
Factory of pipe can also produce basic-armor
Factory of basic-inserter can also produce player-port
Factory of basic-inserter can also produce rocket-launcher
Factory of basic-inserter can also produce radar
Factory of basic-inserter can also produce basic-mining-drill
Factory of basic-inserter can also produce assembling-machine-1
Factory of pistol can also produce shotgun-shell
Factory of energy-shield-equipment can also produce night-vision-equipment
Factory of basic-electric-discharge-defense-equipment can also produce basic-laser-defense-equipment
Factory of lubricant can also produce solid-fuel-from-heavy-oil
Factory of logistic-chest-active-provider can also produce logistic-chest-storage
Factory of logistic-chest-active-provider can also produce logistic-chest-requester
Factory of logistic-chest-active-provider can also produce logistic-chest-passive-provider
Factory of blueprint can also produce deconstruction-planner
Factory of iron-chest can also produce iron-gear-wheel
Factory of iron-chest can also produce pipe
Factory of iron-chest can also produce iron-stick
Factory of iron-chest can also produce basic-bullet-magazine
Factory of iron-chest can also produce steel-plate
Factory of iron-chest can also produce basic-armor
Factory of poison-capsule can also produce slowdown-capsule
Factory of piercing-bullet-magazine can also produce piercing-shotgun-shell
Factory of piercing-bullet-magazine can also produce big-electric-pole
Factory of piercing-bullet-magazine can also produce heavy-armor
Factory of piercing-bullet-magazine can also produce medium-electric-pole
Factory of steel-chest can also produce empty-barrel
Factory of stone-furnace can also produce stone-brick
Factory of heavy-armor can also produce piercing-shotgun-shell
Factory of heavy-armor can also produce big-electric-pole
Factory of heavy-armor can also produce piercing-bullet-magazine
Factory of heavy-armor can also produce medium-electric-pole
Factory of rocket-launcher can also produce player-port
Factory of rocket-launcher can also produce basic-inserter
Factory of rocket-launcher can also produce radar
Factory of rocket-launcher can also produce basic-mining-drill
Factory of rocket-launcher can also produce assembling-machine-1
Factory of pumpjack can also produce chemical-plant
Factory of medium-electric-pole can also produce piercing-shotgun-shell
Factory of medium-electric-pole can also produce big-electric-pole
Factory of medium-electric-pole can also produce piercing-bullet-magazine
Factory of medium-electric-pole can also produce heavy-armor
Factory of curved-rail can also produce straight-rail
Factory of iron-stick can also produce iron-gear-wheel
Factory of iron-stick can also produce pipe
Factory of iron-stick can also produce iron-chest
Factory of iron-stick can also produce basic-bullet-magazine
Factory of iron-stick can also produce steel-plate
Factory of iron-stick can also produce basic-armor
Factory of night-vision-equipment can also produce energy-shield-equipment
Factory of radar can also produce player-port
Factory of radar can also produce basic-inserter
Factory of radar can also produce rocket-launcher
Factory of radar can also produce basic-mining-drill
Factory of radar can also produce assembling-machine-1
Factory of gun-turret can also produce submachine-gun
Factory of green-wire can also produce red-wire
Factory of basic-bullet-magazine can also produce iron-gear-wheel
Factory of basic-bullet-magazine can also produce pipe
Factory of basic-bullet-magazine can also produce iron-chest
Factory of basic-bullet-magazine can also produce iron-stick
Factory of basic-bullet-magazine can also produce steel-plate
Factory of basic-bullet-magazine can also produce basic-armor
Factory of shotgun-shell can also produce pistol
Factory of basic-mining-drill can also produce player-port
Factory of basic-mining-drill can also produce basic-inserter
Factory of basic-mining-drill can also produce rocket-launcher
Factory of basic-mining-drill can also produce radar
Factory of basic-mining-drill can also produce assembling-machine-1
Factory of basic-transport-belt can also produce burner-inserter
Factory of slowdown-capsule can also produce poison-capsule
Factory of deconstruction-planner can also produce blueprint
Factory of burner-inserter can also produce basic-transport-belt
Factory of effectivity-module can also produce productivity-module
Factory of effectivity-module can also produce speed-module
Factory of steel-plate can also produce iron-gear-wheel
Factory of steel-plate can also produce pipe
Factory of steel-plate can also produce iron-chest
Factory of steel-plate can also produce iron-stick
Factory of steel-plate can also produce basic-bullet-magazine
Factory of steel-plate can also produce basic-armor
Factory of speed-module can also produce productivity-module
Factory of speed-module can also produce effectivity-module
Factory of stone-brick can also produce stone-furnace
Factory of basic-laser-defense-equipment can also produce basic-electric-discharge-defense-equipment
Factory of assembling-machine-1 can also produce player-port
Factory of assembling-machine-1 can also produce basic-inserter
Factory of assembling-machine-1 can also produce rocket-launcher
Factory of assembling-machine-1 can also produce radar
Factory of assembling-machine-1 can also produce basic-mining-drill
Factory of submachine-gun can also produce gun-turret
Factory of red-wire can also produce green-wire
Factory of logistic-chest-passive-provider can also produce logistic-chest-storage
Factory of logistic-chest-passive-provider can also produce logistic-chest-requester
Factory of logistic-chest-passive-provider can also produce logistic-chest-active-provider
Factory of basic-armor can also produce iron-gear-wheel
Factory of basic-armor can also produce pipe
Factory of basic-armor can also produce iron-chest
Factory of basic-armor can also produce iron-stick
Factory of basic-armor can also produce basic-bullet-magazine
Factory of basic-armor can also produce steel-plate
Factory of solid-fuel-from-heavy-oil can also produce lubricant
Factory of straight-rail can also produce curved-rail