我正在 learnpythonthehardway 中的练习 41 并不断收到错误:
I am working on exercise 41 in learnpythonthehardway and keep getting the error:
Traceback (most recent call last):
File ".url.py", line 72, in <module>
question, answer = convert(snippet, phrase)
File ".url.py", line 50, in convert
result = result.replace("###", word, 1)
TypeError: Can't convert 'bytes' object to str implicitly
我使用的是python3,而书籍使用的是python2,所以我做了一些更改.这是脚本:
I am using python3 while the books uses python2, so I have made some changes. Here is the script:
#!/usr/bin/python
# Filename: urllib.py
import random
from random import shuffle
from urllib.request import urlopen
import sys
WORD_URL = "http://learncodethehardway.org/words.txt"
WORDS = []
PHRASES = {
"class ###(###):":
"Make a class named ### that is-a ###.",
"class ###(object):
def __init__(self, ***)" :
"class ### has-a __init__ that takes self and *** parameters.",
"class ###(object):
def ***(self, @@@)":
"class ### has-a funciton named *** that takes self and @@@ parameters.",
"*** = ###()":
"Set *** to an instance of class ###.",
"***.*** = '***'":
"From *** get the *** attribute and set it to '***'."
}
# do they want to drill phrases first
PHRASE_FIRST = False
if len(sys.argv) == 2 and sys.argv[1] == "english":
PHRASE_FIRST = True
# load up the words from the website
for word in urlopen(WORD_URL).readlines():
WORDS.append(word.strip())
def convert(snippet, phrase):
class_names = [w.capitalize() for w in
random.sample(WORDS, snippet.count("###"))]
other_names = random.sample(WORDS, snippet.count("***"))
results = []
param_names = []
for i in range(0, snippet.count("@@@")):
param_count = random.randint(1,3)
param_names.append(', '.join(random.sample(WORDS, param_count)))
for sentence in snippet, phrase:
result = sentence[:]
# fake class names
for word in class_names:
result = result.replace("###", word, 1)
# fake other names
for word in other_names:
result = result.replace("***", word, 1)
# fake parameter lists
for word in param_names:
result = result.replace("@@@", word, 1)
results.append(result)
return results
# keep going until they hit CTRL-D
try:
while True:
snippets = list(PHRASES.keys())
random.shuffle(snippets)
for snippet in snippets:
phrase = PHRASES[snippet]
question, answer = convert(snippet, phrase)
if PHRASE_FIRST:
question, answer = answer, question
print(question)
input("> ")
print("ANSWER: {}
".format(answer))
except EOFError:
print("
Bye")
我到底做错了什么?谢谢!
What exactly am I doing wrong here? Thanks!
urlopen()
返回一个字节对象,要对其执行字符串操作,您应该将其转换为 str
首先.
urlopen()
returns a bytes object, to perform string operations over it you should convert it to str
first.
for word in urlopen(WORD_URL).readlines():
WORDS.append(word.strip().decode('utf-8')) # utf-8 works in your case
要获得正确的字符集:如何下载python中有正确字符集的任何(!)网页吗?
这篇关于Python3 错误:TypeError:无法将“字节"对象隐式转换为 str的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!