Hello. I want to modify and sort but it’s only modifying why is it not searching?

std_file = open("students.txt", "r") #reading the contents in students.txt file
std_records = std_file.readlines() #readlines() return all lines in the file, as a list where each line is an item in the list object
record = 0

for std_record in std_records:

print("[",(record+1),"]",std_record.strip()) #printing each line from text file

record+=1
record_num=int(input("\nEnter record number you wanted to edit: "))

print()

std_details = std_records[record_num-1].split(",") #value of selected record from text file transfer to std_details list variable
record = 0

for std_record in new_list:

print("[",(record+1),"]",std_record.strip()) #printing each line from text file

record+=1
element = 0

for record_element in std_details:

print("[",(element+1),"]",record_element) #printing the selected record details

element+=1
element_number=int(input("Enter element number you wanted to edit: "))
print("\nCurrent element value:",std_details[element_number-1])
new_element_value = input("Enter new element value: ")
new_line=""
if element_number==4 and record!=record_num:

new_line="\n" #to be added when updating the record in text file, so each record separated by new line
std_details[element_number-1] = new_element_value+new_line #assigning new value into selected element
updated_record = ','.join(std_details) #join() method takes all items in a list and joins them into one string. updated_record is a string
std_records[record_num-1] = updated_record #now selected line has updated value
new_list = []
while std_records:

minimum = std_records[0]

for x in std_records:

if x < minimum:

minimum = x

new_list.append(minimum)

std_records.remove(minimum)
print()

print("Sorted:")
with open("students.txt", "w") as file:

file.writelines(std_records) #writing the updated student records into text file
print("\nRecord updated!")
std_file.close()