python的文件讀寫，序列化，複製/刪除目錄，壓縮/解壓縮/列出壓縮文件目錄，計算CRC32和MD5

import json
import os
import shutil
import pickle
import zlib
import binascii
import hashlib
import zipfile
from random import randint
s="你好世界!\nHello World!"
print("文件讀寫".center(60,"-"))
with open("E://test.txt","w") as fp:
    fp.write(s)
with open("E://test.txt") as fp:
    print(fp.read())#readline()讀取一行
    fp.seek(2)
    print("seek()移動遊標讀取1個字符:",fp.read(1))
t=''.join(map(str,list(randint(1,10) for i in range(10))))
lt=""
print("將隨機字符串寫入文件1:",t)
with open("E://test2.txt","w",encoding="utf8") as fp:
    fp.write(t)
with open("E://test2.txt","r",encoding="utf8") as fp:
    lt=fp.read()
lt=''.join(map(str,sorted(list(map(int,lt)))))
print("讀取字符串排序後寫入文件2:",lt)    
with open("E://test2_new.txt","w",encoding="utf8") as fp:
    fp.write(lt)    
print("序列化".center(60,"-"))
x=json.dumps("一龥")
print("json序列化：",x)
print("json反序列化：",json.loads(x))
d1=820
d2=1.23
d3='魑魅魍魎'
d4=(9,5,1)
d5={'a':'又','b':'雙','c':'叒','d':'叕'}
d=[d1,d2,d3,d4,d5]
with open("E://pickle.dat","wb") as fp:
    try:
        pickle.dump(len(d),fp)
        for i in d:
            pickle.dump(i,fp)
        print("\npickle序列化成功!")
    except:
        print("\npickle序列化失敗!")
print("pickle反序列化：")        
with open("E://pickle.dat","rb") as fp:
    for i in range(pickle.load(fp)):
        print(pickle.load(fp))        
print("文件操作".center(60,'-'))
print("列出該文件目錄下擴展名爲py的文件名:",list(f for f in os.listdir(os.getcwd()) if os.path.isfile(f) and f.endswith('.py')))
print("將該文件目錄下txt的文件擴展名更改爲dat:")
f_list=list(f for f in os.listdir(os.getcwd()) if f.endswith('.txt'))
for f in f_list:
    new_name=f[:-3]+"dat"
    os.rename(f,new_name)
    print(f+"更改爲"+new_name)
print("複製文件",shutil.copyfile("E://被複制.txt","E://複製.txt"))
print("壓縮文件：",shutil.make_archive("E://PNG","zip","E://Study","PNG"))
print("解壓文件：",shutil.unpack_archive("E://PNG.zip","E:/"))
print("刪除解壓的文件夾：",shutil.rmtree("E://PNG"))
print("用zlib計算CRC32值(循環冗餘校驗)：",zlib.crc32('1234'.encode()))
print("用binascii計算CRC32值(循環冗餘校驗):",binascii.crc32("1234".encode()))
print("計算MD5的值（信息摘要算法）:",hashlib.md5('1234'.encode()).hexdigest())
print("查看zip壓縮文件的文件列表：")
with zipfile.ZipFile('E://PNG.zip') as fp:
    for f in fp.namelist():
        print(f)

序列化的文件用記事本查看爲亂碼