Python编程实现查看微信上信息（运用itchat模块）、统计字符个数

一、Pycharm的安装

建议官网下载，安装最新版本，安装好之后安装itchat库

在Linux中安装pycharm时，先解压安装包，然后在解压好的文件夹中找到./bin/pycharm.sh 运行该文件进行安装

二、运用itchat模块.查看微信上的好友和好友性别比例

# Alt + Insert  ==== Create New file
# Ctrl + Alt + S  ===== seetings
# python package: itchat
import itchat
 
# 1. Login weixin
itchat.auto_login(hotReload=True)
 
# 2. get friends information, return friends List [1, 2, 3, 4, .....]
# Every friend information saved as dict.
friends = itchat.get_friends()
 
# First friend information is yours
mine = friends[0]
name = mine['NickName']
Signature = mine['Signature']
 
# init male, female, other = 0
male = female = other = 0
for friend in friends[1:]:
    sex = friend['Sex']
    if sex == 1:
        male += 1
    elif sex == 2:
        female += 1
    else:
        other += 1
# Ctrl + D : Quick copy one line
print("""
*******************************weixin INformation***********************
        Name: %s
        Signature: %s
        Male friends count: %d 
        Female friends count: %d
        Unknown sex friends count: %d 
""" %(name, Signature, male, female, other))

三、运用itchat模块.查看微信上的好友和好友省份分布

# 1. Analyse
# friend province
# "shanxi"-200  "beijing"-100  "shandong" 10 .........
# dict: {"province_name":people_num}
 
# 2.
import itchat
from collections import  Counter
 
# 3.
itchat.auto_login(hotReload=True)
# friends===List, friend===Dict {"NickName":"", "Sex":"", "Province":""}
# First Information is your info
friends = itchat.get_friends()
 
# First friend information is yours
mine = friends[0]
name = mine['NickName']
Signature = mine['Signature']
 
# 4.
# Save Province to dict
provinces = {}
for friend in friends[1:]:
    province = friend['Province']
    if province != '':
        # If province not in dict, set value=1
        # If province in dict, value += 1
        if province in provinces:
            # value = provinces[province]    # province people count
            # value += 1                     # value + 1
            # provinces[province] = value     # set new value
            provinces[province]  += 1
        else:
            provinces[province] = 1
 
# 5.
counter = Counter(provinces)
top_5_provinces = counter.most_common(5)
 
# 6.
print("""
*******************************weixin INformation***********************
        Name: %s
        Signature: %s
""" %(name, Signature))
 
print("*******************************weixin friends Province***********************")
for name, count in top_5_provinces:
    print("%s : %s" %(name, count))

四、统计字符个数

统计"hello world hello python hello java hello c hello c"每个字母出现的次数，并找出出现频率最高的三个字符

from collections import  Counter
string = 'hello world hello python hello java hello c hello c'
 
string_dict = {}
for c in string:
    if c in string_dict:
        string_dict[c] = string_dict[c] + 1
    else:
        string_dict[c] = 1
print(string_dict)
counter = Counter(string)
top_3_string = counter.most_common(3)
print(top_3_string)