Human: re findall lazy iterator. Assistant: 
Here is a Python code to find all lazy iterators

import re

def re_findall_lazy_iterator(pattern, string):
    """
    Find all matches of pattern in string.

    This function is a lazy iterator.  It will only return the matches
    when you ask for them.

    :param re pattern:
    :param str string:
    :rtype: list
    :return:
    """
    return re.finditer(pattern, string)

# Enter the pattern
pattern = "([a-z]+)"

# Enter the string
string = "hello world"

# Calling the function
matches = re_findall_lazy_iterator(pattern, string)

# Printing the matches
for match in matches:
    print((match.group(0)))

#Example Output
# hello
# world

#Remember to inspect code for bugs.