文件 flush() 方法
flush() 方法是 Python 中的一個內置方法,用於清除/刷新內部緩衝區,在 Python 中使用 fila 處理時是最佳實踐,可以在將新文本寫入/附加到文件之前清除內部緩衝區。
用法:
file_object.flush()
參數:
- 它不接受任何參數。
返回值:
這個方法的返回類型是<class 'NoneType'>
,它什麽都不返回。
例:
# Python File flush() Method with Example
# creating a file
myfile = open("hello.txt", "w")
# writing text to the file
myfile.write("Hello friends, how are you?")
# flushing the internal buffer
myfile.flush()
# writing the text again
myfile.write("\nI am good, what about you?")
# flushing the internal buffer
myfile.flush()
# writing the text again
myfile.write("\nI am good too, thanks!")
# closing the file
myfile.close()
# reading content from the file
myfile = open("hello.txt", "r")
print("file content...")
print(myfile.read())
myfile.close()
輸出
file content... Hello friends, how are you?I am good, what about you? I am good too, thanks!
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