列表用法

l = [10, 3.1, 'aaa', ['bbb', 'ccc'], 'ddd']
print(l)            # [10, 3.1, 'aaa', ['bbb', 'ccc'], 'ddd']
print(l[1])         # 3.1
print(l[2])         # aaa
print(l[3][1])      # ccc

字典用法

info = {"name": '刘倍荣', "age": 18, "gender": 'male', "salary": 19}
print(info['name'])  # 刘倍荣

列表+字典

students_info = [
{'name': '刘倍荣0', 'age1': 19, 'gender': '刘'},
{'name': '刘倍荣1', 'age1': 19, 'gender': '倍'},
{'name': '刘倍荣2', 'age1': 19, 'gender': '荣'},
]
print(students_info[1]['gender'])  # 倍

格式化输出 %

print("abc%shij%s" %("def", 10)) #abcdefhij10

格式化输出 format1

a = "name:{}  age:{}  sex:{} "
print(a.format("刘倍荣", 100, "male"))       #name:刘倍荣  age:100  sex:male

格式化输出 format2

a = "name:{x}  age:{y}  sex:{z} "
print(a.format(z="male", y=100, x="刘倍荣")) #name:刘倍荣  age:100  sex:male

格式化输出 f”

x="刘倍荣"
y=100
z="male"
print(f'name:{x}  age:{y}  sex:{z}')       #name:刘倍荣  age:100  sex:male

格式化输出 f” {}内的字符串可以被当作表达式运行。

print(f'{100+9}')  # 109