Predict the output:

arr = {}
arr[1] = 1 
arr['1'] = 2 
arr[1] += 1 
sum = 0
for k in arr:
  sum += arr[k]
print(sum)

Predict the output

a = {(1,2):1,(2,3):2}	
print(a[1,2])

Find the error/output. Consider below given two sets of codes. Which one will produce an error? Also, predict the output produced by the correct code.

(a)

box = {}
jars = {'Jam' :4}
crates = {}	
box['biscuit'] = 1	
box['cake'] = 3	
crates['box'] = box	
crates['jars'] = jars	
print(len(crates[box]))

(b)

box = {}
jars = {'Jam' :4}
crates = {}	
box['biscuit'] = 1	
box['cake'] = 3	
crates['box'] = box	
crates['jars'] = jars	
print(len(crates['box']))

Predict the output :

dct = {}
dct[1] = 1
dct ['1'] = 2 
dct[1.0] = 4 
sum = 0
for k in dct: 
  print(k, sum)
  sum += dct[k]
print(sum)