1.微信好友性别比例分析

import itchat

# 登录微信，需要扫描弹出的二维码
itchat.login()
# 爬取好友信息,json字符串
friends = itchat.get_friends(update=True)[0:]
# print(friends) # 测试是否正常输出好友

# 定义一个函数，用来爬取各个变量, return list arr
def get_var(var):
    variable = []
    for i in friends:
        value = i[var]
        variable.append(value)
    return variable

Sex = get_var('Sex')
# 初始化男女性别计数器
male = female = other = 0
for sex in Sex:
    if sex == 1:
        male += 1
    elif sex == 2:
        female += 1
    else:
        other += 1

# 总数
total = len(friends)

maleRate = float(male)/total*100
femaleRate = float(female)/total*100
otherRate = float(other)/total*100

print('男性好友%d人，占比：%.2f%%' % (male, maleRate))
print('女性好友%d人，占比：%.2f%%' % (female, femaleRate))
print('其他性别好友%d人，占比：%.2f%%' % (other, otherRate))

# output
# 男性好友199人，占比：61.04%
# 女性好友112人，占比：34.36%
# 其他性别好友15人，占比：4.60%

我的好友这么少啊，男性还是占多数的。部分好友未设置性别属性。

绘制比例图

可视化展示用到了matplotlib.pyplot，看到有人用百度的echarts-python，这个库还不成熟，我用的时候遇到中文编码错误，所以弃了。改用更官方更强大的matplotlib。

# 百分比圆饼表
import matplotlib.pyplot as plt

# Pie chart, where the slices will be ordered and plotted counter-clockwise:
labels = 'male', 'female', 'other'
sizes = [maleRate, femaleRate, otherRate]
explode = (0, 0.1, 0)  # 突出显示女性比例，嘿嘿 only "explode" the 2nd slice (i.e. 'female')

fig1, ax1 = plt.subplots()

ax1.pie(sizes, explode=explode, labels=labels, autopct='%1.2f%%',
        shadow=True, startangle=90)
ax1.axis('equal')  # Equal aspect ratio ensures that pie is drawn as a circle.

plt.show()

2.好友个性签名词云

# coding: utf-8
import itchat

# 登录微信，需要扫描弹出的二维码
itchat.login()
# 爬取好友信息,json字符串
friends = itchat.get_friends(update=True)[0:]
# print(friends)

#定义一个函数，用来爬取各个变量
def get_var(var):
    variable = []
    for i in friends:
        value = i[var]
        variable.append(value)
    return variable

# 调用函数得到各变量
# 个性签名
Signature = get_var('Signature')

# 很多本来是表情的，变成了 emoji、span、class 等等这些无关紧要的词，需要先替换掉，另外，
# 还有类似<>/= 之类的符号，也需要写个简单的正则替换掉，再把所有拼起来，得到 text 字串。
import re
siglist = []
for i in friends:
    signature = i["Signature"].strip().replace("span", "").replace("class", "").replace("emoji", "")
    rep = re.compile("1f\d+\w*|[<>/=]")
    signature = rep.sub("", signature)
    siglist.append(signature)
text = "".join(siglist)

# 结巴分词
import jieba
wordlist = jieba.cut(text, cut_all=True)
word_space_split = " ".join(wordlist)

# 根据自己想要的图片、形状、颜色画出相似的图形
import matplotlib.pyplot as plt
from wordcloud import WordCloud, ImageColorGenerator
import numpy as np
import PIL.Image as Image
import os

# d = os.path.dirname(__file__)
# 可选：coloring = np.array(Image.open(os.path.join(d, '/imgs/wechat.jpg)))
coloring = np.array(Image.open("{0}/imgs/wechat.jpg".format(os.getcwd()))) # 这里的wechat.jpg可以换成其他你想呈现的效果底图
my_wordcloud = WordCloud(background_color="white", max_words=2000,
                         mask=coloring, max_font_size=60, random_state=42, scale=2,
                         font_path="/Library/Fonts/songti.ttc").generate(word_space_split)

image_colors = ImageColorGenerator(coloring)
plt.imshow(my_wordcloud.recolor(color_func=image_colors))
plt.imshow(my_wordcloud)
plt.axis("off")
plt.show()

# 保存图片，并发送到手机
my_wordcloud.to_file(os.path.join(os.getcwd(), 'output/wechat_signature_cloud.jpg'))
itchat.send_image('output/wechat_signature_cloud.jpg', 'filehelper')

底图1：