Can anybody tell me what is the difference between while loop and yield in detail with suitable example ?

Answer 1

While and yield are quite different actually. While is a loop executing a block of code until the condition is false. Yield is used in generators, which are quite similar to functions.

A while loop can be used like this:
x = 1
while x < 5:
print("in a loop") # prints 4 times
x += 1

A generator(yield) can be used like this:
def generator():
# a generator is a function that has the keyword yield in it
x = 1
while x < 5:
yield x
x += 1

my_gen = generator()

print(my_gen) # prints out generator object at a certain location

# a generator is also an iterator
for i in my_gen:
print(i) # output: 1234

The yield keyword is similar to the return keyword but it does not end the function but pauses only to resume when it's __next__ method is called

There are a whole lot more you can do with while and yield which I did not explain

Answer 2

Those are two totally different things.

A while loop just executes as long as certain condition is met.
e.g.

i = 1;
while(i<4):
print(i)
i += 1

prints
1
2
3

yield is quite similar to a return statement, but used in generators.

For example you can use a function like

def simplegen():
yield 6
yield 3

and call it via
for i in simplegen():
print(i)

will output
6
3

You can also combine while and yield

def advancedgen(end):
i = 0
while(i<end)
yield i
i += 2

for i in advancedgen(10)
print(i)

will output
0
2
4
6
8