Question

我在写一个文件时遇到问题，我正在使用pylast。按照pylast中给出的模板，我添加了一个正则表达式来提取我需要的东西（这样做没问题），但是当我尝试打印到文件时，我收到错误，并且不知道如何修复它（我我自学python和它的一些库）。我怀疑我需要在某处创建一个编码规范（屏幕的一些输出也显示非标准字符）。我不知道如何解决我的问题。有人可以帮忙吗？感谢

import re
import pylast

RawArtistList = []
ArtistList = []

# You have to have your own unique two values for API_KEY and API_SECRET
# Obtain yours from http://www.last.fm/api/account for Last.fm
API_KEY = "XXX"
API_SECRET = "YYY"

###### In order to perform a write operation you need to authenticate yourself
username = "username"
password_hash = pylast.md5("password")
network = pylast.LastFMNetwork(api_key = API_KEY, api_secret = API_SECRET, username = username, password_hash = password_hash)





##          _________INIT__________
COUNTRY = "Germany"

#---------------------- Get Geo Country --------------------
geo_country = network.get_country(COUNTRY)

#----------------------  Get artist --------------------
top_artists_of_country = str(geo_country.get_top_artists())

RawArtistList = re.findall(r"u'(.*?)'", top_artists_of_country)

top_artists_file = open("C:\artist.txt", "w")
for artist in RawArtistList:
  print artist
  top_artists_file.write(artist + "\n")

top_artists_file.close()

我尝试创建的文件“artist.txt”的名称更改为“x07rtist.txt”，错误开始显示。我明白了：

Traceback (most recent call last):
File "C:\music4A.py", line 32, in <module>
top_artists_file = open("C:\artist.txt", "w")
IOError: [Errno 22] invalid mode ('w') or filename:'C:\x07rtist.txt'

非常感谢您的帮助！欢呼声。

Answer 1

Python docs说：

反斜杠（）字符用于转义字符否则具有特殊含义，例如换行符，反斜杠本身，或引号字符。

...所以当你说

时

top_artists_file = open("C:\artist.txt", "w")

该字符串文字被解释为

C:  \a rtist.txt

...其中\a是一个值为0x07的单个字符。

......该行应改为：

# doubling the backslash prevents misinterpreting the 'a'
top_artists_file = open("C:\\artist.txt", "w")

或

# define the string literal as a raw string to prevent the escape behavior
top_artists_file = open(r"C:\artist.txt", "w")

或

# forward slashes work just fine as path separators on Windows.
top_artists_file = open("C:/artist.txt", "w")

使用pylast - 编码错误后写一个txt文件

1 个答案: