QregExp类PyQt4

Question

I am trying to achieve the following, however with the QRegExp class in PyQt4.

I am struggling to find good examples on how to use this class in python.

def html_trap(text):
    h ={"&":"&amp;",'"':"&quot;","'":"&apos;",">":"&gt;","<":"&lt;"}
    t=""
    for key,value in h.items():
        m=re.search(value,text)
        if m is not None:
            t=text.replace(value,key)
    return t

print(html_trap("Grocery &quot; Gourmet Food"))

Thanks

Answer 1

Instead of search you must use search() you must use indexIn() , this returns the position of the found element or -1 if you can not find it

from PyQt4 import QtCore


def html_trap(text):
    h ={"&": "&amp;",'"':"&quot;","'":"&apos;",">":"&gt;","<":"&lt;"}
    t=""
    for key, value in h.items():
        regex = QtCore.QRegExp(value)
        if regex.indexIn(text) != -1:
            t = text.replace(value, key)
    return t

print(html_trap("Grocery &quot; Gourmet Food"))

Output:

Grocery " Gourmet Food