Question

因此，大部分代码都是我自己的，对于这可能是一团糟和/或可怕的事实表示道歉，但我的问题是为什么这些行

D = open("C:\\aPATH\\hPROC.txt", "a")
D.write("End")

没有追加＆＃34;结束＆＃34;无论什么时候调用它都在文件的底部。

import time

def replace_all(text, rps):
    for i, j in rps.items():
        text = text.replace(i, j)
    return text

def replacer():
    inf = "hScrape.txt"
    ouf = "hPROC.txt"
    A = open(inf, "r")
    B = open(ouf, "w")
    reps = {"Result Date:":"", "Draw Result:":"", "Bonus":"", "January":"", "February":"", "March":"", "April":"", "May":"", "June":"", "July":"", "August":"", "September":"", "October":"", "November":"", "December":"", "With Max Millions!":"", "2009":"", "2010":"", "2011":"", "2012":"", "2013":"", "2014":"", "2015":"", "2016":"", "2017":"", "2018":"", "30th":"", "29th":"", "28th":"", "27th":"", "26th":"", "25th":"", "24th":"", "23rd":"", "22nd":"", "21st":"", "20th":"", "19th":"", "18th":"", "17th":"", "16th":"", "15th":"", "14th":"", "13th":"", "12th":"", "11th":"", "10th":"", "9th":"", "8th":"", "7th":"", "6th":"", "5th":"", "4th":"", "3rd":"", "2nd":"", "1st":"", "\t":""}
    txt = replace_all(A.read(), reps)
    B.write(txt)
    A.close
    B.close

    D = open("C:\\aPATH\\hPROC.txt", "a")
    D.write("End")

    C = open("C:\\aPATH\\Result.txt", "w+")
    print("Completed Filtering Sequence")
    time.sleep(3)


    while True:
        B = open("hPROC.txt", "r")
        z = B.readline()
        print(z)
        if "End" in z:
            C.write("DN")
            break
        else:
            if z != "\n":
                if " " not in z:
                    if int(z) < 10:
                        C.write("0" + z)
                    else:
                        C.write(z)

replacer()

Answer 1

由于Python的文件缓冲系统的工作方式，当打开文件并附加到文件但没有关闭或刷新文件时，附加的行不一定要写。

有关flush的内容的更多信息，请参阅this。

因此，代码的解决方案只是将其更改为

D = open("C:\\aPATH\\hPROC.txt", "a")
D.write("End")
D.close()

另外，如果您打算追加更多文件并在以后关闭该文件，则可以制作该片段

D = open("C:\\aPATH\\hPROC.txt", "a")
D.write("End")
D.flush()

（使文件保持打开状态，并将内部缓冲区刷新到OS缓冲区）。

Answer 2

您忘记使用D.close()

关闭文件

close()将关闭文件，并写入可能在缓冲区中延迟的所有数据。

如果您不想关闭文件，则需要＆＃34; flush＆＃34;两次，例子

D.flush()
os.fsync(D.fileno())

对于后者，请执行import os，这将刷新此文件的os缓冲区。

Python附加不起作用

2 个答案: