Python Note hsuan0223x's Blog

基礎#

雜項#

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print("Hello World") # 輸出Hello World
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1<2 # True
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'foo' in 'foo bar' # yes

字串處理#

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len("Hello World")
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'Hello World'.count('o') # 2
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'Hello World'.replace(' ','\n') # 把字串中的空格換成'換行符號'
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'Hello' + 'World' # HelloWorld
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'Hello World'.index('World') -> 6 # 找尋索引值

編解碼#

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hex(100) -> 0x64
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bin(100) -> 0b1100100
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oct(100) -> 0o144
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0x64 -> 100
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ord('a') -> 97
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chr(97) -> 'a'
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base64.b64encode(b'hello') -> b'aGVsbG8='

數學運算#

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1+1 -> 2
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4**(1/2)+1/7+2 -> 4.142857142857142
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pow(2,10) -> 1024
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pow(2,10,5) -> 4
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72942 % 7 -> 2

變數類型#

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NUM = 4
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STR = "Hello World!"
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FLOAT = 3.14
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LIST = [1,2,3,4,5]
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TUPLE = (1,2,3,4,5)
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SET = {1,2,3,4,5}
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DICT = {"name":"Alice","age":18}
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BOOL = True or False

選擇結構(如果…就…否則…)#

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a = 10
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if a>5:
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    print("a>5")
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elif a==5:
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    print("a==5")
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else:
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    print("a<5")

重複結構(迴圈)#

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condiction = True
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while condiction:
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    do_something()

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for i in range(10):
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    print("i = ", i)
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    #if i == 5:
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    #    break
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    #    continue

Exception Handling(例外處理)#

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a = [1,2,3,4]
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try:
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    print(a[4])
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except:
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    print("something went wrong.")
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    pass #沒東西

requests#

HTTP Method	requests Method	說明
GET	requests.get(url)	向指定資源提出請求，可額外設定params參數字典
POST	requests.post(url)	向指定資源提出請求，可額外設定data參數字典
PUT	requests.put(url)	向指定資源提供最新內容，可額外設定data參數字典
DELETE	requests.delete(url)	請求刪除指定的資源
HEAD	requests.head(url)	請求提供資源的回應標頭(不含內容)
OPTIONS	requests.options(url)	請求伺服器提供資源可用的功能選項

Response 物件	說明
url	資源的url位址
content	回應訊息的內容(bytes)
text	回應訊息內容字串(str)
raw	原始回應訊息串流(bytes)
status_code	回應的狀態(int)
encoding	回應訊息的編碼
headers	回應訊息的標頭
cookies	回應訊息的cookies(dict)
history	請求歷史(list)
json()	將回應訊息進行JSON解碼後回傳(dict)
rasise_for_status()	檢查是否有例外發生，如果有就拋出例外

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# 把google首頁的HTML印出來
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import requests
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r = requests.get('https://www.google.com')
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print(r.text)

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# 爬取某個網站的json檔案
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import requests
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url = "某個url"
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r = requests.get(url)
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json_data = r.json()
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print(json_data)

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# get cookies
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import requests
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url = "https://www.instagram.com/"
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cookie = {"csrftoken":"QWE8928yhrf8723gr827d348y"} # 這是假的
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r = requests.get(url,cookies=cookie)
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print(r.text)

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# 填入登入帳號密碼
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import requests
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url = "???"
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form = {"uid":"admin","password":"123","btnSubmit":"Login"}
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r = requests.post(url,data=form)
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print(r.text)

pwntools#

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import pwn
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io = pwn.process("cmd.exe")
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io = pwn.remote("1.2.3.4",8080)
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io.send("whoami\n")
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io.sendline("whoami")
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io.sendafter("password:","superpassword\n")
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io.sendlineafter("password:","superpassword")
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io.recv(1024,timeout=1)
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io.recvline()
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io.recvuntil("end")
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io.recvlines(2)