x=2             # integer
y=2.02          # float
z='3'           # string
print(str(x)+z) # 23
print(x+int(z)) # 5

a=[x,y,z]       # list
print(a[1])     # 2.02

b=(x,y)         # tuple
print(b[1])     # 2.02

c={'m':7,'n':8} # dictionary
print(c['m'])   # 7