1 布林值

"""
None


str()
int()
float()
list()
tuple()
bool()
"""

# if  xxx:
#

# a = None  # 轉換成布林值是False
# a = 0     # 轉換成布林值是False
# a = 0.0   # 轉換成布林值是False
# a = []   # 轉換成布林值是False
# a = list()   # 轉換成布林值是False
# a = "0"   # 轉換成布林值是True
# a = ""    # 轉換成布林值是False
# a = {}   # 轉換成布林值是False
# a = (100,)     # 轉換成布林值是True
# print(bool(a))


# print(2 and 1)   # and兩邊轉換成布林值都是真，則返回and右邊的值
# print(1 and 0)   # and兩邊轉換成布林值一真一假，則返回假的這個的值
# print(0 and None)   # and兩邊轉換成布林值都是假，則返回and左邊的值


print(1 or 2)  # or兩邊轉換成布林值都是真，則返回or左邊的值
print(2 or 0)   # or兩邊轉換成布林值一真一假，則返回真的這個的值
print(None or 0)  # or兩邊轉換成布林值都是假，則返回or右邊的值
 

2 字典合併

dict1 = {"name": "python", "age": 27}
dict2 = {"job": "AI"}
dict1.update(dict2)
print(dict1)   # {'name': 'python', 'age': 27, 'job': 'AI'}