a = [116, 101, 115, 116, 115, 116, 114, 105, 110, 103]

result = ""
for x in a:
    result + = chr(x)

a = [116, 101, 115, 116, 115, 116, 114, 105, 110, 103]

# empty string
result = ""
# loops trough the list
for x in a:
    # the converted character is added to the string
    result + = chr(x)