python实现将linux python 网络 三科成绩按照优（90-100）通过（90分以下）进行划分并替换掉具体分数值

可以使用Python中的if语句和条件判断来实现对成绩的分类和替换，代码示例如下：

linux_score = 95
python_score = 85
network_score = 100

if linux_score >= 90 and linux_score <= 100:
    linux_score = '优'
elif linux_score < 90:
    linux_score = '通过'

if python_score >= 90 and python_score <= 100:
    python_score = '优'
elif python_score < 90:
    python_score = '通过'

if network_score >= 90 and network_score <= 100:
    network_score = '优'
elif network_score < 90:
    network_score = '通过'

print('linux:', linux_score)
print('python:', python_score)
print('network:', network_score)

输出结果为：

linux: 优
python: 通过
network: 优

这个代码可以将分数分成两个等级，优和通过，并替换到具体的分数值。