pip install linqit

fromlinqitimportList# Go ahead and fill the list with whatever you want... like a list of <Programmer> objects.programmers=List()Avi=type("Avi", (), {})Entrepreneur=type("Entrepreneur", ('talented'), {})elon_musk=Entrepreneur(talented=True)# Then play:last_hot_pizza_slice= (programmers.where(lambdae:e.experience>15)    .except_for(elon_musk)    .of_type(Avi)    .take(3)# [<Avi>, <Avi>, <Avi>]    .select(lambdaavi:avi.lunch)# [<Pizza>, <Pizza>, <Pizza>]    .where(lambdap:p.is_hot()andp.origin!="Pizza Hut")    .last()# <Pizza>    .slices.last()# <PizzaSlice>)# What do you think?

Methods:

allanyconcatcontainsdistinctexcept_forfirstget_by_attrintersectlastselectskiptakewhereof_type

Properties:

summinmaxavgsorted

Deeper - Let's play with a list of people, a custom type.

importListclassPerson():def__init__(self,name,age):self.name=nameself.age=agedef__repr__(self):returnf'Person(name="{self.name}", age={self.age})')# Creating a list of peopleavi,bill,bob,harry=Person('Avi',23),Person('Bill',41),Person('Bob',77),Person('Harry',55)people=List(avi,bill,bob,harry)

Use LINQ selections, write cleaner code

people=people.where(lambdap:p.age>23)# [<Person name="Bill" age="41">, <Person name="Bob" age="77">, <Person name="Harry" age="55">]people.first()# <Person name="Bill" age="41">people.last()# <Person name="Harry" age="55">people.any(lambdap:p.name.lower().startswith('b'))# Truepeople.where(age=55)# [<Person name="Harry" age="55">]people.skip(3).any()# Falsepeople.skip(2).first()# <Person name="Harry" age="55"># Isn't it better than "for", "if", "else", "filter", "map" and list comprehensions in the middle of your code?

More selections

new_kids_in_town= [Person('Chris',18),Person('Danny',16),Person('John',17)]people+=new_kids_in_town# Also works: people = people.concat(new_kids_in_town)teenagers=people.where(lambdap:20>=p.age>=13)danny=teenagers.first(lambdat:t.name=='Danny')# <Person name="Danny" age="16">oldest_teen=teenagers.order_by(lambdat:t.age).last()# <Person name="John" age="17">

Let's make python more dynamic

names=people.name# ['Avi', 'Bill', 'Bob', 'Harry', 'Chris', 'John']ages=people.age# [23, 41, 77, 55, 18, 17]teenagers_names=teenagers.name# ['Chris', 'Danny', 'John']teenagers_names.take(2).except_for(lambdan:n=='Danny')# ['Chris']teenagers.age.min# 16teenagers.age.avg# 17teenagers.age.max# 18

Test Coverage

➜linqitgit:(master) ✗coveragereportNameStmtsMissCover-----------------------------------------linqit/__init__.py20100%linqit/linq_list.py1011189%tests/__init__.py00100%tests/test_list.py2030100%-----------------------------------------TOTAL3061196%