Generators in python

https://medium.com/python-in-plain-english/10-surprising-ways-to-use-generators-in-python-426a38a0d5eb

Generating Infinite Sequences

def natural_number():
    n = 1
    while True:
        yield n
        n += 1
        
        
for num in natural_number():
    print(num)
    if num >= 10:
        break
        
        
nat = natural_number()
for _ in range(10):
    print(next(nat))

 

Generating Large Fibonacci Sequences

def fibonacci():
    a, b = 0, 1
    while True:
        yield a
        a, b = b, a + b


f = fibonacci()
for _ in range(10):
    print(next(f))

 

Tracking with Generator.send() Method

def tracker():
    while True:
        x = yield
        print(f"Tracked: {x}")


t = tracker()
next(t)  # yield 까지 수행 
t.send("Hello")
t.send("World")


# Tracked: Hello
# Tracked: World

 

Streaming Large CSV Files

import csv
def csv_reader(file_name):
    for row in csv.reader(open(file_name)):
        yield row