擅长:python、mysql、java
<p>写入后,文件指针位于文件末尾。您可以返回开始或重新打开</p>
<pre><code>contents = "Test Message"
def readAndWritetofile():
with open("file.txt", 'w+') as file:
file.write(contents)
file.seek(0)
print(file.read())
readAndWritetofile()
</code></pre>
<p>或</p>
<pre><code>contents = "Test Message"
def readAndWritetofile():
with open("file.txt", 'w') as file:
file.write(contents)
# exit the with closes the file
with open("file.txt") as file:
print(file.read())
readAndWritetofile()
</code></pre>