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How to remove a string from a txt file?

On 5/09/19 3:08 AM, Spencer Du wrote:
> Hi
> I want to remove a string from a txt file and then print out what I have removed. How do I do this.
> The txt file is in this format and should be kept in this format.
> txt.txt:
> laser,cameras,

Is this a homework assignment?

What code do you have so far?

How to identify the beginning of the sub-string to be removed?

How to identify the end of the sub-string?

How does one "remove a string" AND "kept in this format"?

Regards =dn