[已解决]利用Python使用操作系统题目

L1ve

问题如图所示，我写了好久都没搞定，求助大佬

最佳答案

月排行榜 / 总排行榜

傻眼貓咪

2022-12-10 17:29:38

(1)
main.py

# 打开文件 MyFile.txt，写入数据
nameHandle = open('MyFile.txt', 'w')
nameHandle.write('one\n')
nameHandle.write('two\n')
nameHandle.close()

# 打开文件 MyFile.txt，读取数据
nameHandle = open('MyFile.txt', 'r')
for line in nameHandle:
    print(line[:-1])
nameHandle.close()

# 打开文件 MyFile.txt，在文件尾端写入数据
nameHandle = open('MyFile.txt', 'a')
nameHandle.write('three\n')
nameHandle.write('four\n')
nameHandle.close()

# 打开文件 MyFile.txt，读取数据
nameHandle = open('MyFile.txt', 'r')
for line in nameHandle:
    print(line[:-1])
nameHandle.close()

结果：
MyFile.txt

one
two
three
four

---

(2)
main.py

students = {'a': 89, 'b': 60, 'c': 45, 'd': 90, 'e': 95}

FILE = open('grade.txt', 'w')

for each in students.items():
    name, score = each
    FILE.write(f"{name} {score}\n")

FILE.close()

# --------------------- 这是分界线 ---------------------
FILE = open('grade.txt', 'r')

for line in FILE:
    name, score = line.split()
    if int(score) > 80:
        print(f"{name} {score}")

FILE.close()

结果：
grade.txt

a 89
b 60
c 45
d 90
e 95

打印结果：

a 89
d 90
e 95

跳转到最佳答案楼层

L1ve

傻眼貓咪

(1)
main.py

# 打开文件 MyFile.txt，写入数据
nameHandle = open('MyFile.txt', 'w')
nameHandle.write('one\n')
nameHandle.write('two\n')
nameHandle.close()

# 打开文件 MyFile.txt，读取数据
nameHandle = open('MyFile.txt', 'r')
for line in nameHandle:
    print(line[:-1])
nameHandle.close()

# 打开文件 MyFile.txt，在文件尾端写入数据
nameHandle = open('MyFile.txt', 'a')
nameHandle.write('three\n')
nameHandle.write('four\n')
nameHandle.close()

# 打开文件 MyFile.txt，读取数据
nameHandle = open('MyFile.txt', 'r')
for line in nameHandle:
    print(line[:-1])
nameHandle.close()

结果：
MyFile.txt

one
two
three
four

---

(2)
main.py

students = {'a': 89, 'b': 60, 'c': 45, 'd': 90, 'e': 95}

FILE = open('grade.txt', 'w')

for each in students.items():
    name, score = each
    FILE.write(f"{name} {score}\n")

FILE.close()

# --------------------- 这是分界线 ---------------------
FILE = open('grade.txt', 'r')

for line in FILE:
    name, score = line.split()
    if int(score) > 80:
        print(f"{name} {score}")

FILE.close()

结果：
grade.txt

a 89
b 60
c 45
d 90
e 95

打印结果：

a 89
d 90
e 95