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Я бегу на Python 3, и я получаю следующее сообщение об ошибке:Python 3: Почему я получаю AttributeError?
AttributeError: 'AssemblyParser' object has no attribute 'hasMoreCommands'
Вот код, который поднимает ошибку:
import sys
from Parser import AssemblyParser
from Code import Code
parser = AssemblyParser(sys.argv[1])
translator = Code()
out_file = str(sys.argv[1]).split(".")
out_file = str(out_file[:1]) + ".hack"
with open(out_file, 'w', encoding='utf-8') as f:
while parser.hasMoreCommands():
parser.advance()
if parser.commandType() == "A_COMMAND":
dec_num = parser.symbol()
binary = "{0:b}".format(dec_num)
elif parser.commandType() == "C_COMMAND":
default_bits = "111"
comp_bits += translator.comp(parser.comp())
dest_bits += translator.dest(parser.dest())
jump_bits += translator.jump(parser.jump())
binary = default_bits + comp_bits + dest_bits + jump_bits
assert len(binary) == 16
f.write(binary)
Вот мой Parser.py файл:
class AssemblyParser:
"""
Encapsulates access to the input code. Reads an assembly language command,
parses it, and provides convenient access to the command's components (fields and symbols).
In addition, removes all whitespace and comments.
"""
def __init__(self, input_file):
self.current_command = ""
self.next_command = ""
with open(input_file,"r+", encoding='utf-8') as f:
for l in f:
line = "".join(l.split()) # Remove whitespace from the line
line = line.split('//') # Removes any comments from the line
clean_line = line[0]
if clean_line.strip(): # Removes any blank lines
f.write(clean_line)
next_command = f.readline()
def __hasMoreCommands__(self):
if self.next_command:
return true
return false
def __advance__(self):
with open(input_file, encoding='utf-8') as f:
self.current_command = self.next_command
self.next_command = f.readline()
def __commandType__(self):
char_1 = self.current_command[:1]
if char_1 == "@":
return "A_COMMAND"
elif char_1 == "(":
return "L_COMMAND"
else:
return "C_COMMAND"
def __symbol__(self):
assert self.commandType() == ("A_COMMAND" or "L_COMMAND")
if self.commandType() == "A_COMMAND":
symbol = str(symbol[1:])
else:
symbol = str(symbol[1:len(symbol)-1])
return str(symbol)
def __dest__(self):
assert self.commandType() == "C_COMMAND"
if "=" in self.current_command:
temp = self.current_command.split("=")
return str(temp[:1])
else:
return ""
def __comp__(self):
assert self.commandType() == "C_COMMAND"
temp = self.current_command
if "=" in temp:
temp = temp.split("=")
temp = str(temp[1:])
if ";" in temp:
temp = temp.split(";")
temp = str(temp[:1])
return temp
def __jump__(self):
assert self.commandType() == "C_COMMAND"
if ";" in self.current_command:
temp = self.current_command.split(";")
return str(temp[1:])
else:
return ""
Я действительно не знаю, почему я получаю эту ошибку, я просмотрел документацию по импорту, но я все больше запутался. Я довольно новичок в Python. Может ли кто-нибудь объяснить эту ошибку?
Спасибо.
'hasMoreCommands' vs' __hasMoreCommands__' – falsetru