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(1)with as f
(2)with as f i in range(10) f.write(str(i))
2.以追加的方式打开E:\aa.txt文件,任意写入文字,以“end”作为结束标志。
with open(r'E:\aa.txt', 'a') as f:
for i in range(10):
f.write('任意字符')
3. 打开e:\aa.txt文件,并把该文件的内容复制到e:\bb.txt文件中去。
with open(r'e:\aa.txt') as f:
content = f.read()
with open(r'e:\bb.txt', 'a') as f:
f.write(content)