文件输出问题

嗨伙计们，我有一个简单的问题，我确定我忽略了一个简单的解决方案但是.....我有一个包含多行空格分隔数据的文件 - 我不知道每行包含多少数据项但是数字
每个文件都是一致的。
我想读取文件，修改每行中的一个数据项，然后使用原始的面向行的格式将文件写回磁盘。
阅读和修改并不是问题;
我最终得到了一个2D数组项目。
但是，将它们返回到与原始格式相同的文件似乎过于困难，特别是因为我事先并不知道每行的行数和项目数。
我有什么遗漏文件条目：123.4 5.6 00.0 12 123.6 5.7 00.1 12 123.5 5.7 00.3 12Modified数组：[123.4 5.6 10.0 12] [123.6 5.7 10.1 12] [123.5 5.7 10.3 12]我有错误格式的新文件：
123.4 5.6 10.0 12 5.7 123.6 10.1 123.5 12 10.3 5.7 --- 12Barrie您当前订阅的VRF为：r***@soco.agilent.comTo订阅发送空白邮件到“join-vrf@it.lists.it.agilent.com
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     以下为原文

  Hi folks,

I have a simple problem and I'm sure I'm overlooking a simple solution
but .....

I have a file containing multiple lines of space delimited data - I do
not know how many data items each line contains but the number is
consistent for each file.  I want to read the file, modify one of the
data items in each line and then write the file back to the disk using
the original line oriented format.  Reading and modifying has not been a
problem; I end up with a 2D array of data items.  However, returning
them to a file having the same format as the original seems overly
difficult, particularly because I don't know the number of lines and the
number of items per line in advance.  What have I missed?

File entry:
123.4   5.6  00.0 12
123.6   5.7  00.1 12
123.5   5.7  00.3 12

Modified array:
[[123.4 5.6 10.0 12][123.6 5.7 10.1 12][123.5 5.7 10.3 12]]

My new file having the wrong format:
123.4
5.6
10.0
12
123.6
5.7
10.1
12
123.5
5.7
10.3
12

Barrie

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