How would I check a string for a certain letter in Python

Question

How would I tell Python to check the below for the letter x and then print  Yes   The below is what I have so far     dog    xdasds   if  x  is in dog        print  Yes

User · Answer

If you want a version that raises an error:

"string to search".index("needle")

If you want a version that returns -1:

"string to search".find("needle")

This is more efficient than the 'in' syntax

User · Answer

Use the in keyword without is   if  x  in dog      print  Yes     If you d like to check for the non-existence of a character  use not in   if  x  not in dog      print  No

User · Answer

in keyword allows you to loop over a collection and check if there is a member in the collection that is equal to the element   In this case string is nothing but a list of characters   dog    xdasds  if  x  in dog       print  Yes     You can check a substring too    gt  gt  gt   x  in  xdasds  True  gt  gt  gt   xd  in  xdasds  True  gt  gt  gt    gt  gt  gt    gt  gt  gt   xa  in  xdasds  False   Think collection    gt  gt  gt   x  in   x    d    a    s    d    s   True  gt  gt  gt     You can also test the set membership over user defined classes      For user-defined classes which define the   contains   method  x in y is true if and only if y   contains   x  is true

[python] How would I check a string for a certain letter in Python?

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