随笔分类 - Python
摘要：# Python's list comprehensions are awesome. vals = [expression for value in collection if condition] # This is equivalent to: vals = [] for value in collection: if condition:...
阅读全文
摘要：def myfunc(x, y, z): print(x, y, z) tuple_vec = (1, 0, 1) dict_vec = {'x': 1, 'y': 0, 'z': 1} >>> myfunc(*tuple_vec) 1, 0, 1 >>> myfunc(**dict_vec) 1, 0, 1
阅读全文
摘要：# Why Python is Great: Namedtuples # Using namedtuple is way shorter than # defining a class manually: >>> from collections import namedtuple >>> Car = namedtup1e('Car', 'color mileage') # Our new "...
阅读全文
摘要：# The get() method on dicts # and its "default" argument name_for_userid = { 382: "Alice", 590: "Bob", 951: "Dilbert", } def greeting(userid): return "Hi %s!" % name_for_userid.get(...
阅读全文
摘要：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))...
阅读全文
摘要：In JS, we have object spread opreator: In python we can do:
阅读全文
