Python: Finding the index of a substring in a string

[zak100]

Hi,

I am trying to find out the index of a substring in a string. "in" tells that the string is present but "find" is returning -1.

import numpy as np
cnt = 0
response = "the following information: Your Email address."
ind = "Your Email address".find(response)
print("index =", ind)
if "Your Email address" in response:
    print("Yes")

Somebody please guide me how can I get the index of substring in the string.

Following is the output:

Quote

index = -1
Yes

Zulfi.

[Ghideon]

8 minutes ago, zak100 said:

Somebody please guide me how can I get the index of substring in the string.

 

https://www.w3schools.com/python/ref_string_find.asp

Edited December 3, 2020 by Ghideon

[zak100]

Hi,

 

Thanks. The correct concept is:

ind = response.find("Your Email address)

 

[Ghideon]

1 hour ago, zak100 said:

The correct concept is:

ind = response.find("Your Email address)

 

That seems pretty close. Add the missing " after the string and the code will run:  

Quote

ind = response.find("Your Email address")

 

[Sunila Jha]

Hi @zak100,

 

I am not sure if you still need help in this or not but if you still does, check this article once - https://www.scaler.com/topics/find-function-in-python/

Hope this will help you some way.