嘗試在字符串之前和之后打印

Question

在python中，我試圖在'©'符號之前和之后提取4個租船者，此代碼在©之后提取字符，任何人都可以幫助在©之前打印字符（我不希望整個字符串得到打印，只有少數字符）

import re
    html = "This is all test and try things that's going on bro Copyright© Bro Code Bro"
    if "©" in html:
        symbol=re.findall(r"(?<=©).+$",html,re.M)
        print(symbol[0][0:100])

Answer 1

這是一個正則表達式解決方案，用於獲取©之前和之后的4個字符

import re

text = "This is all test and try things that's going on bro Copyright© Bro Code Bro"

print(re.findall(".{4}©.{4}", text))

輸出：

['ight© Bro']

Answer 2

html = "This is all test and try things that's going on bro Copyright© Bro Code Bro"
html = html.split("©")

print(html[0][-4:])
print(html[1][:4])

輸出：

ight
 Bro

Answer 3

嘗試這樣做：

if "©" in html:
    pos_c = html.find("©")
    symbol = html[pos_c-4:pos_c]
    print symbol

Answer 4

你快到了！

使用搜索獲取索引，然后根據需要對字符串進行切片/切塊

symbol=re.search(r"(?<=©).+$",html).start()

上面的行給出了匹配的索引，在本例中為63

采用

html[symbol:symbol+4] for post and html[symbol-4:symbol] for pre.

Answer 5

請使用python內置函數split（）來解決問題。

html = "This is all test and try things that's going on bro Copyright© Bro Code Bro" html = html.split('©')