#MonthOfCode day 2 - border

day_2.py

# -*- coding: utf-8 -*-
import random
chars=[' ','┌','┐','└','┘','─','│']
N,M = 32,16
matr = list()
for i in xrange(M):
    line = list()
    for i in xrange(N):
        line.append( random.choice( chars) );
    matr.append(line)

# adding difficulties
for y in xrange(2,M-2):
    for x in xrange(2,N-2):
        if( '─'==matr[y][x] ):
            if (random.choice( (True,False))):
                matr[y][x-1] =  matr[y][x+1] = '─'
                matr[y][x-2] =  '└' ; matr[y][x+2]= '┐'
                continue
            if (random.choice( (True,False))):
                matr[y-1][x] =  matr[y+1][x]= '│'
                matr[y-2][x] = '┐' ; matr[y+2][x]= '└' 

# adding irregular boundaries
H_ELT_PAIR = ('─', '┬','┴' )  ;  V_ELT_PAIR = ('│','├','┤' )
ind_entrance,  ind_exit = 1,  random.randint(1,N-1)
for x in xrange(N):
    matr[0][x] =\
        random.choice(H_ELT_PAIR ) if (x!=ind_entrance) else ' '
    matr[M-1][x] =\
        random.choice(H_ELT_PAIR ) if (x!=ind_exit) else ' '
for y in xrange(M):
    matr[y][0] = random.choice(V_ELT_PAIR )
    matr[y][N-1] = random.choice(V_ELT_PAIR)
# adding corners
matr[0][0], matr[0][N-1],matr[M-1][0], matr[M-1][N-1] = \
    [ '┌',  '┐',  '└',  '┘' ]

#display
print "\n".join( [ ''.join(line) for line in matr ])

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