PyPut: a better version of python's native input function

no dependencies :)

importing the pyput module

import pyput
from pyput.validators import * # validators

# imports below are not required
from pprint import PrettyPrinter # for pretty printing

printer = PrettyPrinter()
pprint = printer.pprint

Usage:

collect string from user

name = pyput.CliInput("enter your name: ").result(str)
print(name, "is of type", type(name))

enter your name: rubbie kelvin
rubbie kelvin is of type <class 'str'>

collect an integer from user

age = pyput.CliInput("enter your age: ").result(int)
print(age, "is of type", type(age))

enter your age: 18
18 is of type <class 'int'>

collect a boolean from user

is_active_on_media = pyput.CliInput("are you active on media? ").result(bool)
print(is_active_on_media, "is of type", type(age))

are you active on media? 
False is of type <class 'int'>

collect a list from user

friends = pyput.CliInput("enter your friends name").result(str, str, str)  # collects 3 strings and returns list
print(friends, "is of type", type(friends))

enter your friends name[0]rezzy
enter your friends name[1]brumeh
enter your friends name[2]middo
['rezzy', 'brumeh', 'middo'] is of type <class 'list'>

# in the above example, the length of the list is determined by the types passed into pyput.CliInput.result
# somthing like this could help :)

n = pyput.CliInput("how many friends do you have? ").result(int)
friends = pyput.CliInput("enter thier names").result([str]*n)
print(friends)

how many friends do you have? 3
enter thier names[0]brumeh
enter thier names[1]kandy
enter thier names[2]jerome
['brumeh', 'kandy', 'jerome']

working with a dictionary

name_dict = pyput.CliInput("what's your name? ").result(firstname=str, lastname=str)
print(name_dict)

what's your name? [firstname]rubbie
what's your name? [lastname]kelvin
{'firstname': 'rubbie', 'lastname': 'kelvin'}

# working with large dictionaries
# lets say we have a default data template for a user
userdata = {
    "name": {"first":"Anonymous", "last":""},
    "gender":"male",
    "email":"no email",
    "numbers":[0, 0]
}

# we wouldnt need to start specifying types
# there's an inbuilt function to deal with that for us; puput.typed
userdata = pyput.CliInput("enter you details:").result(pyput.typed(userdata))
pprint(userdata)

enter you details:[name][first]rubbie
enter you details:[name][last]kelvin
enter you details:[gender]male
enter you details:[email][email protected]
enter you details:[numbers][0]2348141342356
enter you details:[numbers][1]0
{'email': '[email protected]',
 'gender': 'male',
 'name': {'first': 'rubbie', 'last': 'kelvin'},
 'numbers': [2348141342356, 0]}

What does typed() do?

typed() takes in a container, either a dictionary or a list, then iterates through it to change integers, strings, and booleans to thier respective datatypes

# look at this:
typed_example = pyput.typed([1, 2, dict(name="rubbie", age=18, ismale=True)])
pprint(typed_example)

[<class 'int'>,
 <class 'int'>,
 {'age': <class 'int'>, 'ismale': <class 'bool'>, 'name': <class 'str'>}]

collecting 2D List

matrix = [
    [0, 0, 0],
    [0, 0, 0],
    [0, 0, 0]
]

matrix = pyput.CliInput("enter matrix number").result(pyput.typed(matrix))
pprint(matrix)

enter matrix number[0][0]1
enter matrix number[0][1]2
enter matrix number[0][2]3
enter matrix number[1][0]4
enter matrix number[1][1]5
enter matrix number[1][2]6
enter matrix number[2][0]7
enter matrix number[2][1]8
enter matrix number[2][2]9
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

Validating input

# lets make sure the user enters a string with greater than 8 characters
def validator(value):
    return len(value) > 8

data = pyput.CliInput("enter a string: ", validator=validator).result(str)

enter a string: this is valid

# using lambdas
data = pyput.CliInput("enter a string: ", validator=lambda x:len(x)>8).result(str)

enter a string: this is valid

Validator Classes

Inbuilt Validator classes

• StringSizeValidator
• EmailValidator
• PasswordValidator
• RangeValidator

Simple password validator

password = pyput.CliInput("enter your password: ", validator=PasswordValidator()).result(str)

enter your password: qwertyA2!

Creating validator classes

all validator classes should have a validate method that takes in a string argument that returns a bool value :). you might also want to inherit the pyput.validators.Validator class (may not be neccessary).

class SquareIntValidator(Validator):
    """this class validates if a number is a perfect square
    """
    def validate(self, value):
        root = value**0.5
        return value == root*root
    
perfect_square = pyput.CliInput("enter a perfect square: ", validator=SquareIntValidator()).result(int)

enter a perfect square: 9