What test case does this code fail? (Code Coach Security)

Question

G should be between T and $ everytime a string with these characters and x's is entered. There could be many Gs but only one T and one $.

V1 works and V2 doesn't. I found one case where it failed (reversed, T doesn't count? dunno. T$xx...G was the one that failed)
So I changed lo.index('T') with (lo+x). index('T') and thus got rid of the error.
SoloLearn says it still fails in the third case, so I put the other code back, but I am wondering what the problem is. Could you give me some ideas?
I need to be better at input analysis. It's like 75% of the whole thing, I feel. But I also feel I am running the risk of mindless practice when I rush through the homework at my low level so I'll try to revisit the harder ones at times to make them better if I can.
Did you construct maps, flow charts etc when you were a beginner? Any tips for at least a-not-stupid way of studying?

Thanks in advance.

https://code.sololearn.com/cwWZvs1SkG8m/?ref=app
https://code.sololearn.com/cGM5jeaEVcGB/?ref=app

Answer 1

x = input()
x = x.replace('x', '')
if '$T' in x or 'T#x27; in x:
print('ALARM')
else:
print('quiet')

Answer 2

Ne demek, cnm. Baş üstüne!
Gerçi İngilizce anlarım ve baya iyi de anlatabilirim. Ama sanırım Türkçe sizin ana diliniz, o yüzden Türkçe konuşmak bence daha iyi gelir

Answer 3

Güzel, anlamlı, "cazibedar" kod yazabilme yeteneğinde vakitle geliyor. Zaman, tecrübe, hırs, kod yazma sevgisi, yetenekden üstün gelir

Answer 4

Omadingni bersin!
https://code.sololearn.com/cqIp0GrYc1cD/?ref=app

Answer 5

CodeStoryRe'yi daha öğrenmedim. Böylelikle öğrenirim. Sağ olun :-)( Men hali Re tilini o'rganmaganman. Men shunday o'rganaman. rahmat /I haven't studied "re" yet. I'll learn learn about it thanks to this.
Thank you.)

Answer 6

I didn't mean to offend you anyway. If it happened, I am apologizing. what else? Want to learn? Good. You will. Have a nice day. Happy coding