info = {
    "a": "小明",
    "b": "小化",
    "c": "哈哈",
}

print(info)

# 增加
info["e"] = "嘿嘿"

print(info)

# 是否在該字典中
print("a" in info)

# 查
print(info.get("a"))
info["a"] = "呵呵"
print(info)

# 刪除
# info.pop("a")
# print(info)

# 獲取所有的value
print(info.values())

# 獲取所有的key
print(info.keys())

# 先去詞典中查找有沒(méi)有b，沒(méi)有就添加，有就不添加
print(info.setdefault("b", "default"))
print(info.setdefault("d", "default"))

info2 = {
    "g": "1",
    "h": "1",
    "v": "1"
}

# 有相同的覆蓋，不相同的合并
info.update(info2)

print(info)

# 遍歷字典,推薦這個(gè)
for i in info:
    print(i, info[i])

for k, v in info.items():
    print(k, v)

# 初始化一個(gè)字典，創(chuàng)建一個(gè)一層的
c = dict.fromkeys([1, 2, 3], "哈哈")
print(c)