on 29-Aug-2019 (Thu)

Tags

#bones #bony #has-images #knee #landmarks #leg #patella

Question

How to merge two dictionaries

Answer

>>> x = { 'a' : 1, 'b' : 2} >>> y = { 'b' : 3, 'c' : 4} >>> z = { ** x, ** y} >>> z {'c': 4, 'a': 1, 'b': 3} # In Python 2.x you could # use this: >>> z = dict (x, ** y) >>> z {'a': 1, 'c': 4, 'b': 3} # In these examples, Python merges dictionary keys # in the order listed in the expression, overwriting # duplicates from left to right.

Question

# Different ways to test multiple # flags at once in Python

Answer

x, y, z = 0, 1, 0

if x == 1 or y == 1 or z == 1: print ( 'passed' )

if 1 in (x, y, z): print ( 'passed' )

# These only test for truthiness:

if x or y or z: print ( 'passed' )

if any ((x, y, z)): print ( 'passed' )

Question

# The get() method on dicts # and its "default" argument

Answer

name_for_userid = { 382: "Alice" , 590: "Bob" , 951: "Dilbert" , }

def greeting(userid): return "Hi %s!" % name_for_userid . get(userid, "there" )

>>> greeting(382) "Hi Alice!"

>>> greeting(333333) "Hi there!"

Question

# Using namedtuple is way shorter than # defining a class manually:

Answer

>>> from collections import namedtuple

>>> Car = namedtuple( 'Car' , 'color mileage' ) # Our new "Car" class works as expected:

>>> my_car = Car( 'red' , 3812.4)

>>> my_car . color

'red'

>>> my_car . mileage

3812.4

# We get a nice string repr for free:

>>> my_car Car(color='red' , mileage=3812.4)

# Like tuples, namedtuples are immutable:

>>> my_car . color = 'blue' AttributeError: "can't set attribute"

Tags

#christina

Question

Tia

Answer

786738

Tags

#bones #bony #has-images #knee #landmarks

Tags

#bones #bony #has-images #knee #landmarks

Tags

#bones #bony #has-images #knee #landmarks

Tags

#bones #bony #has-images #knee #landmarks

Tags

#bones #bony #femur #has-images #landmarks #master

Tags

#bones #bony #femur #has-images #landmarks

Tags

#bones #bony #femur #has-images #landmarks