ship days | Python Fiddle

'''
shipdays--for knb shipping needs. literally just lists of lists and an iterator wow
written by @lemaireality April 2016. if you wish to use/edit for your own purposes go ahead but DO NOT CLAIM YOU WROTE ALL OF IT
handles error cases, no selfcest by default but you can toggle it by setting the third argument to true
for a whole month with selfcest: shipday(<yourmonth>,0,True) OR shipday(<yourmonth>,selfcest=True)

update june 2016: now with shipbycharas function, which takes an input character names AS THEY APPEAR IN THE LISTS WHICH INCLUDES QUOTATION MARKS
AROUND THE NAME & CASE=SENSITIVE (so to find out when all the imakaga days are you would type in shipbycharas("taiga","imayoshi"). 
order of the names does not matter! (ie for the above example you'd get both 10/4 and 4/10)

'''

Four = ["imayoshi","hanamiya","hyuuga","akashi","nijimura","okamura","tatsuya","wakamatsu","ootsubo","yuuya","kasamatsu","hayakawa","teppei","eiji","ishida","mochida","tanimura","iwamura","narumi"]
Five = ["aomine","seto","murasakibara","fukui","izuki","mayuzumi","kimura","nakatani","moriyama","papa","higuchi","kasuga"]
Six = ["aomine","wakamatsu","koganei","reo","midorima","haizaki","miyaji"]
Seven = ["kise","furuhashi","susa","alex","kagetora","teppei","kotarou","midorima","kasamatsu","ogiwara","sakamoto"]
Eight = ["kobori","yamazaki","kise","haizaki","masako","miyaji","harasawa","mitobe","eikichi","okamura","omuro"]
Nine = ["tsuchida","nakamura","akashi","nijimura","takeuchi","murasakibara","sakurai"]
Ten = ["hayakawa","taiga","hara","takao","tsugawa","kubota"]
Eleven = ["kuroko","liu","mochizuki","sekiguchi"]
Twelve = ["tatsuya","furihata","matsumoto","hyuuga"]
Thirteen = ["fukuda","wakamatsu"]
Fourteen = ["takao"]
Fifteen = ["kuroko","kawahara"]

inx = [[],[],[],[],Four,Five,Six,Seven,Eight,Nine,Ten,Eleven,Twelve,Thirteen,Fourteen,Fifteen]

def shipday(month,day = 0,selfcest = False):
    if (day < 4 and day != 0) or day > 15 or month < 4 or month > 12:
        print("no ship days for this time: " + str(month) + "/" + str(day))
        return
    if day == 0:
        mon = str(month)
        for j in inx[4:]:
            for i in inx[month]:
                jjj = ": " + mon + "/" + str(inx.index(j))
                for k in j:
                    if i != k: print(i + "&" + k + jjj) 
                    elif selfcest: print (i + "&" + i + jjj)
            print("\n") #for readability
        return
    print("Shipdays for " + str(month) + "/" + str(day))
    for i in inx[month]:
        for j in inx[day]:
            if i != j: print(i + "&" + j) #now without selfcest
            elif selfcest: print (i + "&" + i)

def shipbycharas(chara,ochara):
    for j in range(4,13):
        for k in range(len(inx[j])):
            if inx[j][k] == chara:
                for x in range(4,16):
                    for y in range(len(inx[x])):
                        if inx[x][y] == ochara:
                            dayy = ": " + str(j) + "/" + str(x)
                            print(chara + "&" + ochara + dayy)
            elif inx[j][k] == ochara:
                for x in range(4,16):
                    for y in range(len(inx[x])):
                        if inx[x][y] == chara and chara not in inx[j]:
                            dayy = ": " + str(j) + "/" + str(x)
                            print(ochara + "&" + chara + dayy)
 
#testing the shipbycharas function                            
#shipbycharas("aomine","murasakibara")
 
print("\n")    
'''actual case that runs'''                
shipday(7)

#test cases below, left for reference
'''
shipday(8) #a whole month
print("\n")
shipday(7,2) #invalid date
print("\n")
shipday(4,14) #a day
print("\n")
shipday(5,5,True) #selfcest example
print("\n")
shipday(9,selfcest=True) #another selfcest
'''

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