Why is the result different. See my code below to help me

Question

a, b = 0, 1
a, b = b, a + b
print(a)
print(b)

a, b = 0, 1
a = b
b = a + b
print(a)
print(b)

https://code.sololearn.com/c0SicUF04PdB/?ref=app

Answer 1

a, b = b, a

This statement causes swapping values a to b, b to a simultaneously..
So
a, b = 0, 1 #a=0,b=1
a, b = b, a + b #a=b=1, b=a+b=0+1=1 so a=1,b=1

a, b = 0, 1
a = b #after this statement b assigned to a, now a and b have same value 1
b = a + b =1+1
So a=1,b=2

Answer 2

a, b = 0, 1 #a has 0 and b has 1
a, b = b, a + b # a has b which is 1 and b has 0+1 which is 1
print(a) # so it wil print 1
print(b) # so it wil print 1

a, b = 0, 1 # a has 0 and b has 1
a = b # a has 1
b = a + b # b has a+ b which is 1 + 1 that is 2
print(a) # it wil print 1
print(b) # it will print 2

# hope u understood my simple language, folow and message me