03. read a file with an indefinite loop
Finish this function which reads the data.txt file, then process each line as CSV.
It prints all the first names of each line.
But the printing stops after printing the first occurrence of a first name that has 7 characters (this part is not done in the code).
This function has no explicit return value.
for line in file_ref:
value = line.split()
if len(value(5)) == 7: