Python writelines()函数

code

f = open('a.txt', 'r')
n = open('b.txt','w+')
n.writelines(f.readlines())
n.close()
f.close()

code

f = open("a.txt", 'w')
f.write("写入一行新数据")
f.flush()
 

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f = open("a.txt", 'w',buffering = 0)
f.write("写入一行新数据")
 

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f = open("a.txt", 'w')
f.write("写入一行新数据")
f.close()

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f = open("a.txt", 'a')
f.write("
写入一行新数据")
f.close()