Hire a Programmer

I have a simple project. I need a program that will do the following: Select file(s) to edit. These will be simple text files. Read the file one line at a time. If the line begins with "checksum" delete the line Look for the last word of a line to be "begin" delete all lines after that until the word "end" is present. Save the file(s) as text file. I would prefer python if possible. Here is an example where you can see what will be deleted: Version =20 VersionRequired =20 Checksum =-254047563 Begin Form AutoCenter = NotDefault PictureData = Begin 0x0e00000000000000010000005800000000000000000000000204000059000000 , 0x0000000000000000d56900004d09000020454d46000001003cda02000d000000 , 0x010000000000000000000000000000002003000058020000d30000009e000000 , 0x4b0000001000000000000000050000000e000000140000000000000010000000 , 0x14000000 End OrderBy ="[Processing Data Entry].[Sample ID]" RecSrcDt = Begin 0x139c70b3f3c3e140 End GUID = Begin 0x32648cf57b654c4d97c4c2369d3a22a2 End Thank you MP