python3报错ValueError:notenoughvaluestounpack(expected2,got0)

出错代码
def analyseLocation(friends):
    freqs = {}
    headers = ['NickName','Province','City']
    with open('location.csv','w',encoding='utf-8',newline='',) as csvFile:
        writer = csv.DictWriter(csvFile, headers)
        writer.writeheader()
        for friend in friends[1:]:
            row = {}
            row['NickName'] = friend['NickName']
            row['Province'] = friend['Province']
            row['City'] = friend['City']
            if(friend['Province']!=None):
                if(friend['Province'] not in freqs):
                   freqs[friend['Province']] = 1
                else:
                   freqs[friend['Province']] = 1
            writer.writerow(row)
    for k,v in freqs:
        print("{0}:{1}".format(k,v))

报错提示
Traceback (most recent call last):
  File "main.py", line 195, in 
    analyseLocation(friends)
  File "main.py", line 64, in analyseLocation
    for k,v in freqs:
ValueError: not enough values to unpack (expected 2, got 0)

完整代码如下
#!/usr/bin/python
#-*- coding: utf-8 -*-

import os
import re
import csv
import time
import json
import jieba
from jieba import analyse
import itchat
import base64
from snownlp import SnowNLP
import requests
import sys
from collections import Counter
import matplotlib.pyplot as plt
from pylab import *
from faceApi import FaceAPI
mpl.rcParams['font.sans-serif'] = ['SimHei']
from PIL import Image
import numpy as np
from wordcloud import WordCloud

def analyseSex(firends):
    sexs = list(map(lambda x:x['Sex'],friends[1:]))
    counts = Counter(sexs).items()
    counts = sorted(counts, key=lambda x:x[0], reverse=False)
    counts = list(map(lambda x:x[1],counts))
    labels = ['Unknow','Male','Female']
    colors = ['red','yellowgreen','lightskyblue']
    plt.figure(figsize=(8,5), dpi=80)
    plt.axes(aspect=1) 
    plt.pie(counts, 
            labels=labels, 
            colors=colors, 
            labeldistance = 1.1, 
            autopct = '%3.1f%%',
            shadow = False, 
            startangle = 90, 
            pctdistance = 0.6 
    )
    plt.legend(loc='upper right',)
    plt.title(u'%s的微信好友性别组成' % friends[0]['NickName'])
    plt.show()

def analyseLocation(friends):
    freqs = {}
    headers = ['NickName','Province','City']
    with open('location.csv','w',encoding='utf-8',newline='',) as csvFile:
        writer = csv.DictWriter(csvFile, headers)
        writer.writeheader()
        for friend in friends[1:]:
            row = {}
            row['NickName'] = friend['NickName']
            row['Province'] = friend['Province']
            row['City'] = friend['City']
            if(friend['Province']!=None):
                if(friend['Province'] not in freqs):
                   freqs[friend['Province']] = 1
                else:
                   freqs[friend['Province']] = 1
            writer.writerow(row)
    for k,v in freqs:
        print("{0}:{1}".format(k,v))

def analyseHeadImage(frineds):
    # Init Path
    basePath = os.path.abspath('.')
    baseFolder = basePath + '\\HeadImages\\'
    if(os.path.exists(baseFolder) == False):
        os.makedirs(baseFolder)

    # Analyse Images
    faceApi = FaceAPI()
    use_face = 0
    not_use_face = 0
    image_tags = ''
    for index in range(1,len(friends)):
        friend = friends[index]
        # Save HeadImages
        imgFile = baseFolder + '\\Image%s.jpg' % str(index)
        imgData = itchat.get_head_img(userName = friend['UserName'])
        if(os.path.exists(imgFile) == False):
            with open(imgFile,'wb') as file:
                file.write(imgData)

        # Detect Faces
        time.sleep(1)
        result = faceApi.detectFace(imgFile)
        if result == True:
            use_face += 1
        else:
            not_use_face += 1 

        # Extract Tags
        result = faceApi.extractTags(imgFile)
        image_tags += ','.join(list(map(lambda x:x['tag_name'],result)))
    
    labels = [u'使用人脸头像',u'不使用人脸头像']
    counts = [use_face,not_use_face]
    colors = ['red','yellowgreen','lightskyblue']
    plt.figure(figsize=(8,5), dpi=80)
    plt.axes(aspect=1) 
    plt.pie(counts, #性别统计结果
            labels=labels, #性别展示标签
            colors=colors, #饼图区域配色
            labeldistance = 1.1, #标签距离圆点距离
            autopct = '%3.1f%%', #饼图区域文本格式
            shadow = False, #饼图是否显示阴影
            startangle = 90, #饼图起始角度
            pctdistance = 0.6 #饼图区域文本距离圆点距离
    )
    plt.legend(loc='upper right',)
    plt.title(u'%s的微信好友使用人脸头像情况' % friends[0]['NickName'])
    plt.show() 

    image_tags = image_tags.encode('iso8859-1').decode('utf-8')
    back_coloring = np.array(Image.open('face.jpg'))
    wordcloud = WordCloud(
        font_path='simfang.ttf',
        background_color="white",
        max_words=1200,
        mask=back_coloring, 
        max_font_size=85,
        random_state=75,
        width=800, 
        height=480, 
        margin=15
    )

    wordcloud.generate(image_tags)
    plt.imshow(wordcloud)
    plt.axis("off")
    plt.show()

def analyseSignature(friends):
    signatures = ''
    emotions = []
    pattern = re.compile("1f\d.+")
    for friend in friends:
        signature = friend['Signature']
        if(signature != None):
            signature = signature.strip().replace('span', '').replace('class', '').replace('emoji', '')
            signature = re.sub(r'1f(\d.+)','',signature)
            if(len(signature)>0):
                nlp = SnowNLP(signature)
                emotions.append(nlp.sentiments)
                signatures += ' '.join(jieba.analyse.extract_tags(signature,5))
    with open('signatures.txt','wt',encoding='utf-8') as file:
         file.write(signatures)

    # Sinature WordCloud
    back_coloring = np.array(Image.open('flower.jpg'))
    wordcloud = WordCloud(
        font_path='simfang.ttf',
        background_color="white",
        max_words=1200,
        mask=back_coloring, 
        max_font_size=75,
        random_state=45,
        width=960, 
        height=720, 
        margin=15
    )

    wordcloud.generate(signatures)
    plt.imshow(wordcloud)
    plt.axis("off")
    plt.show()
    wordcloud.to_file('signatures.jpg')
    
    # Signature Emotional Judgment
    count_good = len(list(filter(lambda x:x>0.66,emotions)))
    count_normal = len(list(filter(lambda x:x>=0.33 and x<=0.66,emotions)))
    count_bad = len(list(filter(lambda x:x<0.33,emotions)))
    print(count_good * 100/len(emotions))
    print(count_normal * 100/len(emotions))
    print(count_bad * 100/len(emotions))
    labels = [u'负面消极',u'中性',u'正面积极']
    values = (count_bad,count_normal,count_good)
    plt.rcParams['font.sans-serif'] = ['simHei'] 
    plt.rcParams['axes.unicode_minus'] = False
    plt.xlabel(u'情感判断')
    plt.ylabel(u'频数')
    plt.xticks(range(3),labels)
    plt.legend(loc='upper right',)
    plt.bar(range(3), values, color = 'rgb')
    plt.title(u'%s的微信好友签名信息情感分析' % friends[0]['NickName'])
    plt.show()

# login wechat and extract friends
itchat.auto_login(hotReload = True)
friends = itchat.get_friends(update = True)
analyseLocation(friends)
analyseSex(friends)
analyseSignature(friends)
analyseHeadImage(friends)

1 个解决方案

#1

---

freqs拿到的数据是不是不符合