python：尝试解析列表时获取UnicodeEncodeError

Question

trying to pipe a list that I've scraped from http://www.ropeofsilicon.com/roger-eberts-great-movies-list/ through the API at http://www.omdbapi.com/ to grab their IMDB ids.

creating logging for movies that I can and can't find as follows:

import requests

OMDBPath = "http://www.omdbapi.com/"

movieFile = open("movies.txt")
foundLog = open("log_found.txt", 'w')
notFoundLog = open("log_not_found.txt", 'w')

####

for line in movieFile:
    name = line.split('(')[0].decode('utf8')
    print name
    year = False
    if line.find('(') != -1:
        year = line[line.find('(')+1 : line.find(')')].decode('utf8')
        OMDBQuery = {'t': name, 'y': year}
    else:
        OMDBQuery = {'t': name}

    req = requests.get(OMDBPath, params=OMDBQuery)
    if req.json()[u'Response'] == "False":
        if year:
            notFoundLog.write("Couldn't find " + name + " (" + year + ")" + "\n")
        else:
            notFoundLog.write("Couldn't find " + name + "\n")
    # else:
    #     print req.json()
    #     foundLog.write(req.text.decode('utf8').encode('latin1') + ",")
movieFile.close()
foundLog.close()
notFoundLog.close()

Been reading a lot about unicode encoding and decoding, looks like this is happening because I'm not encoding the file in the right manner? Not sure what's wrong here, getting an issue when I get to "Caché":

Caché
Traceback (most recent call last):
  File "app.py", line 34, in <module>
    notFoundLog.write("Couldn't find " + name + " (" + year + ")" + "\n")
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 18: ordinal not in range(128)

Answer 1

Here is a working solution that relies on the codecs module to provide transparent encoding/decoding to/from utf-8 for the various files you open:

import requests
import codecs

OMDBPath = "http://www.omdbapi.com/"

with codecs.open("movies.txt", encoding='utf-8') as movieFile, \
     codecs.open("log_found.txt", 'w', encoding='utf-8') as foundLog, \
     codecs.open("log_not_found.txt", 'w', encoding='utf-8') as notFoundLog:
    for line in movieFile:
        name = line.split('(')[0]
        print(name)
        year = False
        if line.find('(') != -1:
            year = line[line.find('(')+1 : line.find(')')]
            OMDBQuery = {'t': name, 'y': year}
        else:
            OMDBQuery = {'t': name}

        req = requests.get(OMDBPath, params=OMDBQuery)
        if req.json()[u'Response'] == "False":
            if year:
                notFoundLog.write(u"Couldn't find {} ({})\n".format(name, year))
            else:
                notFoundLog.write(u"Couldn't find {}\n".format(name))
        #else:
            #print(req.json())
            #foundLog.write(u"{},".format(req.text))

Note that the use of the codecs module is only required in Python 2.x. In Python 3.x, the built-in open function should handle this properly by default.