首先粘贴代码：
shopping={}
key1=input('请输入要存入的商品名称：')
value1=input('请输入商品的金额（数字）：')
if value1.isdigit():
value1=int(value1)
shopping[key1]=value1
for i in shopping:
print(i,shopping[i])
代码功能：输入商品名称和商品价钱，然后存入字典中，最后输出
错误类型：
Testing started at 20:44 ...
C:\Users\Administrator\PycharmProjects\untitled4\venv\Scripts\python.exe "D:\Program Files (x86)\PyCharm Community Edition 2018.2.4\helpers\pycharm_jb_pytest_runner.py" --path C:/Users/Administrator/PycharmProjects/untitled4/Day3/test_shopping.py
Traceback (most recent call last):
File "D:\Program Files (x86)\PyCharm Community Edition 2018.2.4\helpers\pycharm_jb_pytest_runner.py", line 5, in
import pytest
ImportError: No module named 'pytest'
Process finished with exit code 1
最后说明一下：我文件名：test_shopping.py
运行了一下出现错误，然后从新创建文件把代码粘贴复制后，成功运行，我也不知道错那了
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/1978/viewspace-3134343/ ，如需转载，请注明出处，否则将追究法律责任。
