1. Python 中的逻辑否定用 not
2. 对于下面的代码直邮输入整数才能运行，无论字符串或者浮点型都会报错
int(input('How many games should I simulate? '))
可以通过 try 来修改，同时注意 raise 的使用
while True:
try:
nb_of_games = int(input('How many games should I simulate? '))
if nb_of_games <= 0:
raise ValueError
print('Ok, will do!')
break
except ValueError:
print('Your input is incorrect, try again.')
3. set 与 dict 都是大括号
# Checking for membership in a list
'y' in ['yes', 'y', 'no', 'n']
'Y' in ['yes', 'y', 'no', 'n']
# Checking for membership in a set
'y' in {'yes', 'y', 'no', 'n'}
'Y' in {'yes', 'y', 'no', 'n'}
'''
Curly braces are used for both literal dictionaries and literal sets.
There is no potential conflict, except for empty set versus empty dictionary;
{} denotes an empty dictionary, not an empty set:
'''
# Singleton dictionary and set, respectively
type({'one': 1})
type({'one'})
# Empty dictionary and set, respectively
type({})
type(set())
4. random.choice() 可以随机选择列表里面的元素
random.randrange()，在 0 与 n 之间随机产生一个数
from random import choice
doors = ['A', 'B', 'C']
for i in range(12):
choice(doors)
5. list.pop() 默认删除最后一个，否则按照索引删除
6. format
To output information about the game as it is being played, it is convenient to use formatted strings; they are preceded with f and can contain pairs of curly braces that surround expressions meant to be replaced with their values. Also, though strings can be explicitly concatenated with the + operator, they can also be implicitly concatenated when they are separated with nothing but space characters, including possibly new lines:
x = 10
u = 4.5
v = 10
print(f'x is equal to {x}.'
' That is not all: '
f'{u} divided by {v} equals {u / v}.'
)
x = 123 / 321
f'{x}'
f'{x:.0f}'
f'{x:.1f}'
f'{x:.2f}'
f'{x:.3f}'
f'{x:.4f}'
f'{x:.30f}'
7. 神奇的 * 号，乘号，可以扩展字符串，可以扩展列表
[1, 2, 3]*3 "abc"*3