Question

由于限制，我无法使用re，sys或os等任何导入模块。我在开始时要导入的任何内容都已输出。这让我的生活充满了生机。这是我到目前为止所得到的：

#I CANT USE ANY IMPORT MODULES DUE TO RESTRICTIONS ON THE MACHINE THIS RUNS ON :(
#
# These Are the Variables for our file path and the start and ending points of what I want to delete.
#----------------------------------------------------------------------------------------------------
DelStart = "//StartBB"
DelEnd = "//EndBB"
FilePath = "C:\\Users\\kenne_000\\Desktop\\New folder\\test.sqf"
#----------------------------------------------------------------------------------------------------
#Opens the FilePath in Read set this command to f
f = open(FilePath).read()


#Sets value of out to create file in Write mode called "Filepath".out
Out = open(FilePath + '.out', 'w')


#assigns fL as open FilePath and split it up line by line for indexing
fL = f.split('/n')


#Assings LN as index our file and find the lines DelStart and DelEnd
LN = fL.index(DelStart,DelEnd)

#This Gives an error 
#>>> LN = fL.index(DelStart,DelEnd)
#Traceback (most recent call last):
# File "<stdin>", line 1, in <module>
#TypeError: slice indices must be integers or None or have an __index__ method


#text is replacing everything between our start and endpoints with nothing ""
# STILL NEED THIS SECTION NO CLUE HOW TO DO THIS


#Writes our new file Minus our designated start and end points
out.write(text)


#Closes Our New File
out.close()


#Ends Script
Script.close()

我能够创建一个脚本来编写所有文本并插入标记，这些标记对于插入的每组文本都是单独的，但是我不再知道在删除该部分时要做什么标记之间。

Answer 1

这个答案的学分是lazy1和他的评论解决方案：

fL是一个行列表。和fL.index将罚款不属于它的一行。您是否需要删除每一行或整个文件？在任何 case，使用字符串索引查找开始和结束然后切片。类似于：i = line.find（DelStart）j = line.find（DelEnd）print line [：i] + line [j + len（DelEnd）：]

# These Are the Variables for our file path and the start and ending points of what I want to delete.
#----------------------------------------------------------------------------------------------------
DelStart = "//StartBB" #Replace This With Proper Start Que
DelEnd = "//EndBB" #Replace this with the proper End Que
FilePath = "FILEPATH GOES HERE"
#----------------------------------------------------------------------------------------------------
#Sets Line to open our filepath and read it
line = open(FilePath).read()

#i finds our start place j finds our ending place
i = line.find(DelStart)
j = line.find(DelEnd)


#sets text as finding start and end and deleting them + everything inbetween
text = line[:i] + line[j+len(DelEnd):]

#Creates our out file and writes it with our filter removed
out = open(FilePath + '.out', 'w')
out.write(text)


#Closes Our New File
out.close()


#Ends Script
Script.close()

Answer 2

虽然你的自我回答中的代码看起来应该有用，但它并不是特别优雅：

您应该使用with块来处理文件。
您的变量line被错误命名：它根本不包含一行，而是包含输入文件的全部内容。
您的脚本会立即读入整个文件，这对于大型文件的内存使用而言可能会有问题。

这是另一种选择：

def excise(filename, start, end):
    with open(filename) as infile, open(filename + ".out", "w") as outfile:
        for line in infile:
            if line.strip() == start:
                break
            outfile.write(line)
        for line in infile:
            if line.strip() == end:
                break
        for line in infile:
            outfile.write(line)

此功能使用with open(...)（向下滚动至开始的段落＆＃34;最好使用with关键字...＆＃34;）以确保即使您正确关闭文件遇到某种错误，以及一次读取和写入一行以节省内存。

如果您的文件 example.txt ，则包含以下内容：

one
two
three
//StartBB
four
five
six
//EndBB
seven
eight
nine

...然后按如下方式调用excise() ......

excise("example.txt", "//StartBB", "//EndBB")

...会做你想做的事：

<强> example.txt.out

one
two
three
seven
eight
nine

Answer 3

这仅使用内置字符串函数：

    string = "This is the string"
    stringA = "This"
    stringB = " string"
    stringC = stringA + stringB
    stringD = stringC.replace(string, stringC)

Answer 4

重写@KennethDWhite答案的重要部分，作为一个功能。我只是将其作为对他答案的评论发布，但这不能正确格式化。

# ToDo: this also deletes the delimiters. Perhaps add a parameeter to indicuate 
#       whether to do so,or just to delete the text between them?
def DeleteStringBetween(string, startDelimiter, endDelimiter):
    startPos = string.find(startDelimiter)
    endPos   = string.find(endDelimiter)

    # If either delimiter was not found, return the string unchanged.
    if (startPos == -1) or (endPos == -1):
        return string

    return string[:startPos] + string[endPos + len(endDelimiter):]

删除两个字符串之间的文件中的所有文本而不导入任何模块

4 个答案: