Guess why? - looks a bit weird result.. describe WHY?

01_guess_why.py

# Two Different Results
# Compare #A-1 to #B-1
# Guess why? thinking about join() function.

# board = [[ str(n) for n in range(7,12) ]] #A
board = [ str(n) for n in range(7,12) ]    #B

print (board)

for t in board:
    print('|'+'|'.join(t)+'|')          #1
    # print('|'.join(t)+'|')            #2
    # print(','.join(t))                #3

# '''
# #A-1
#    [['7', '8', '9', '10', '11']]
#    |7|8|9|10|11|
#    [Finished in 2.36s]
# 
# #B-1
#     ['7', '8', '9', '10', '11']
#     |7|
#     |8|
#     |9|
#     |1|0|
#     |1|1|
#     [Finished in 1.83s]
# 
# Why #A-1 spent more time?
# '''

a = "Life is Short, You Need Python"
b = "ABRAKADABRA"
c = ['1','2','3','4','5']
d = [1,2,3,4,5]

print(','.join(a))
print(','.join(b))
print(','.join(c))
print(str(d))
print(','.join(str(d)))
print('#'.join(str(d)))

L,i,f,e, ,i,s, ,S,h,o,r,t,,, ,Y,o,u, ,N,e,e,d, ,P,y,t,h,o,n
A,B,R,A,K,A,D,A,B,R,A
1,2,3,4,5
[1, 2, 3, 4, 5]
[,1,,, ,2,,, ,3,,, ,4,,, ,5,]
[#1#,# #2#,# #3#,# #4#,# #5#]
[Finished in 2.153s]