擅长:python、mysql、java
<p>您可以使用文本文件来存储代码已经运行了多少次。从文本文件中读取此值并将其添加到ex中。然后增加代码运行的次数,将其写入文本文件,然后运行您编写的代码。在</p>
<pre><code>counterFile = open("counter.txt","r") #counter.txt stores the number of times code has been run. Just create this file manually
counter = counterFile.read()
if(len(counter) == 0):
counter = 0
else:
counter = int(counter)
counterFile.close()
exp = 0
with open ('test.txt','r') as b:
lines = b.readlines()
with open('test.txt','w') as b:
for i,line in enumerate(lines):
print i
if i == exp+counter:
b.write('test_data\n')
b.write(line)
counter += 1
counterFile = open("counter.txt","w")
counterFile.write(str(counter))
counterFile.close()
</code></pre>