With detailed Python programming steps, also remember that the grade will be accessed by inputting $10$test files by teacher, while I don't know what file names will be named by the teachers.

Problem description: You need exactly m truck drivers to transport goods from a source location to a destination. All m truck drivers will depart from the source at the same time. Each truck driver may take a different amount of time to reach the destination. There are n candidate drivers available, and you need to select m drivers from this pool. The driving time for each candidate driver from the source to the destination is given in an array A of size n$,$where each element represents the driving time in hours $($a positive real number$).$For example, if A$=[2\mathrm{.}3,3,2\mathrm{.}5,7],$it means there are n$=4$candidate drivers with driving times of $2\mathrm{.}3$hours$,3$hours$,2\mathrm{.}5$hours$,$ and $7$hours respectively. Your objective is to select m drivers so that the difference between the maximum and minimum driving times among the selected drivers is minimized.

Input: Array A with n elements, m

Output: The minimum difference value

Note: You cannot use existing libraries to directly call off$-$the$-$shelf heap, queue, sorting, stack algorithms, but you can implement them when needed. Except these algorithms, you can use existing libraries when necessary, in your program.

Examples for the problem

Input Example $1$A$=[2\mathrm{.}3,3,2\mathrm{.}5,7],$m$=2$

Output Example $20\mathrm{.}2$A$=[3,4\mathrm{.}3,6\mathrm{.}4,5\mathrm{.}2,7\mathrm{.}1],$m$=3$

Section $2$: Input and Output Format $1\mathrm{.}9.$

Your program should read a test file in $.$txt$$containing the driving times of n drivers. The format of test files is illustrated by examples $$file$1.$txt$$and $$file$2.$txt$$below$.$ Your program should output on the screen a single value that is the minimum difference.

Sample input file $$file$1.$txt$422\mathrm{.}332\mathrm{.}57$The output on screen $($stdout in C$++)0\mathrm{.}2$Sample input file $$file$2.$txt$$The output on screen $($stdout in C$++)5334\mathrm{.}36\mathrm{.}45\mathrm{.}27\mathrm{.}11\mathrm{.}9$The format of the input file is as follows: $$the $1$st line shows the number of candidate drivers n$,$the $2$nd line shows the number of drivers needed m$,$each subsequent line shows the driving time of a candidate driver n is integer in the range $[1,10000000].$m is integer in the range $[1,10000000].$Each driving time is in range $(0,200].$

Section $3$: Hints $$Use a large enough integer type $($e$.$g$.,$long$)$to prevent $$integer overflow$$in counting. $$A simple program is to use nested for$-$loops. Its time complexity is O$($n$2).$It is acceptable for small input file but too slow for large input file. $$Some programming tricks can be used to speed up your program by a constant factor.

$(4\mathrm{.}2)$Test files for grading Total marks: $100\%$Your program will be graded by using $10$test files. Python $2\mathrm{.}7\mathrm{.}5$The running time of your program will be measured on the COMP apollo server. For each test file, if your program can produce the correct output within $1$minute$,$ then you get $+10$marks$.$ If you use off$-$the$-$shelf heap, queue, sorting, stack algorithms in existing libraries, $20$marks will be deducted.

Please provide me the changed of detailed Python program: Can the output result: if $\_\_$name$\_\_=="\_\_$main$\_\_"$: file$\_$name $=\text{'}$file$1.$txt$\text{'}$# Replace with your actual file name m $=2$# Number of drivers you need to select driving$\_$times $=$read$\_$driving$\_$times$($file$\_$name$)$result $=$min$\_$difference$($driving$\_$times, m$)$print$($result$),$be changed into a program that can open any txt file without manually changing the file name and number of drivers I need to select? or it can provide options for me to ask me to input the txt file name and the number of drivers I need to select?