import sys
if len(sys.argv) != 2:
    print("File")
    raise SystemExit(1)
f = open(sys.argv[1])
lines = f.readline()
f.close()
fvalues = [line for line in lines]
print(min(fvalues))
print(max(fvalues))

wavedocs@vm010-001-042-003:~/python$ python3 list.py log
Print file:log
Traceback (most recent call last):
  File "list.py", line 11, in <module>
    fvalues = [float(line) for line in lines]
  File "list.py", line 11, in <listcomp>
    fvalues = [float(line) for line in lines]
ValueError: could not convert string to float: 

wavedocs@vm010-001-042-003:~/python$ cat log 
19.34342
1.34327
0.657
479.325654

import sys
if len(sys.argv) != 2:
    print("File")
    raise SystemExit(1)
file_ = open(sys.argv[1])
lines = file_.readlines()
file_.close()
fvalues = [float(line.strip()) for line in lines]
print(min(fvalues))