peekiter

PeekIter is a Python3 package that implements peeking into iterators via a wrapper class. Peeking means looking at the next element from a generator without consuming it.


Keywords
iter, iterator, generator, peek, loop
License
Other
Install
pip install peekiter==0.1

Documentation

What is PeekIter

PeekIter is a Python3 package that implements peeking into iterators via a wrapper class. Peeking means looking at the next element from a generator without consuming it.

Install

sudo pip3 install peekiter

How to use it

Live Demo v1.1

While

# Using a while loop
foo = PeekIter(i for i in range(10))
while foo:
    print(foo.next, foo.peek)

For

# Using a for loop
foo = PeekIter(i for i in range(10))
for _next in foo:
    print(_next, foo.peek)

Recursion

# Using recursion
foo = PeekIter(i for i in range(10))
def bar():
    print(foo.next, foo.peek)
    if foo:
        bar()
bar()

Custom terminal

foo = PeekIter((i for i in range(10)), terminal=4)
while foo:
    print(foo.next) # 0, 1, 2, 3 (terminal is exclusive)
print(foo.next) # 4 (any further calls will produce the terminal)
print(foo.peek) # 4 (works with peek as well, ofc)

Version History

1.1

  • Now featuring custom terminals.

1.0

  • Works in While loops
  • Works in For loops
  • Works in Recursive calls