help inserting simple characters

[DanPatterson · Accepted solution]

"".join([f"_{i}" for i in "hello"])+"_"
 '_h_e_l_l_o_'

[Chelsea_Trusdell]

For example, for a string hello, the result should be _h_e_l_l_o_.

word = "hello"
new_word = "_"
for letter in word:
new_word = letter + "_"
print(new_word)

but i am not getting _h_e_l_l_o_. this. what am i doing wrong ? how do i fix this ?

thanks 

[AndyAnderson · Accepted solution]

Look into Python’s assignment operators.

[Chelsea_Trusdell]

For example, for a string hello, the result should be _h_e_l_l_o_.

word = "hello"
new_word = "_"
for letter in word:
new_word = letter + "_"
print(new_word)

but i am not getting _h_e_l_l_o_. this. what am i doing wrong ?

thanks 

[DavidPike · Accepted solution]

perhaps missing the augmented assignment operator +=

word = "hello"
new_word = "_"
for letter in word:
  new_word += letter + "_"
print(new_word)

[JoshuaBixby · Accepted solution]

Similar, but slightly different, to another response using str.join() and string formatting:

>>> word = "hello"
>>> print(f"_{'_'.join(word)}_")
_h_e_l_l_o_
>>> 

[Chelsea_Trusdell]

thank you both!

[Anonymous User · Accepted solution]

To avoid leading and trailing join symbols, you can try this:

word = "hello"
joinword = ""

for (idx,letter) in enumerate(word):
   joinword += letter
   if idx < len(word)-1:
      joinword += "_"

print(joinword)

This will print 'h_e_l_l_o'