xcvbnm

def calc(file):
  arr = file.readlines()
  arr_2 = []
  for i in arr:
    s = ""
    for j in range(len(i)):
      tmp = i[j]
      if (tmp >= '0' and tmp <= '9') or tmp == '.':
        s = s + tmp
      elif s != "":
        arr_2.append(float(s))
        s = ""
    if s != "":
      arr_2.append(float(s))
  return arr_2

inputFile = 0
try:
  inputFile = open('TF14_1.txt', 'w')
except IOError:
  print("File TF14_1.txt could not be opened")
else:
  print("Opening file TF14_1.txt for writing.")

inputFile.write('12354.13542' + '\n' + '78954.1235 1243.43' + '\n' + ' linelineline 3' + '452')
inputFile.close()

try:
  inputFile = open('TF14_1.txt', 'r')
except IOError:
  print("File TF14_1.txt could not be opened")
else:
  print("Opening file TF14_1.txt for reading.")

arr = calc(inputFile)
inputFile.close()

outputFile = 0
try:
  outputFile = open('TF14_2.txt', 'w')
except IOError:
  print("File TF14_1.txt could not be opened")
else:
  print("Opening file TF14_2.txt for writing.")

for i in arr:
  outputFile.write(f"{i} ")
outputFile.write("\n")
outputFile.close()
try:
  outputFile = open('TF14_2.txt', 'r')
except IOError:
  print("File TF14_1.txt could not be opened")
else:
  print("Opening file TF14_2.txt for reading.")

arr_2 = calc(outputFile)
max = arr_2[0]
for i in arr_2:
  if max < i:
    max = i
outputFile.close()
print(arr_2)
print(f"maximum: {max}")