目录
一、实战场景
实战场景: 如何将多个文件多列进行关联
二、主要知识点
文件读写
基础语法
异常处理
循环语句
字符串处理
三、菜鸟实战
马上安排！
1、创建 python 文件
"""
Author: 菜鸟实战
实战场景: 如何将多个文件多列进行关联
"""
# 导入系统包
import platform
print("Hello，菜鸟实战")
print("实战场景: 如何将多个文件多列进行关联 ")
grade_dict = {}
# 需要先创建文件py015_grade.txt
with open("py015_grade.txt", encoding="utf8") as f:
for line in f:
sno, grade = line.strip().split(",")
grade_dict[sno] = grade
print(grade_dict)
# 需要先创建文件py015.txt
fout = open("py015.txt", "w", encoding="utf8")
with open("py015_student.txt", encoding="utf8") as f:
for line in f:
sno, sname = line.strip().split(",")
grade = grade_dict[sno]
# 关联py015_student.txt、py015_grade.txt写入py015.txt
fout.write(f"{sno},{sname},{grade}\n")
# 关闭文件流
fout.close()
print("Python 版本", platform.python_version())
2、运行效果
菜鸟实战，持续学习!