find first string starting with vowel in LIST Python

I am brand new to python -

I have to build a function called 'first__vowel'. ACCEPT a list of strings as input
and RETURN the first string that starts with a lowercase vowel ("a","e","i","o", or "u"). if no string starts with vowel, RETURN the empty string ("").

Can you help build this function.

Thanks

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

add a comment |

I am brand new to python -

Can you help build this function.

Thanks

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

add a comment |

I am brand new to python -

Can you help build this function.

Thanks

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

I am brand new to python -

Can you help build this function.

Thanks

python python-3.x

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

edited Jan 2 at 5:49

Barbaros Özhan

14.2k71634

asked Jan 2 at 5:05

F Hamad

132

asked Jan 2 at 5:05

F Hamad

132

asked Jan 2 at 5:05

F Hamad

132

add a comment |

4 Answers
4

active

oldest

votes

You need:

def first_vowel(lst):

    # iterate over list using for loop

    for i in lst:

        # check if first letter is vowel

        if i and i[0] in ['a','e','i','o','u']:

            return i 

    return ""



k = ['sad','dad','mad','asd','eas']

print(first_vowel(k))

Or You can also use regex

import re



def first_vow(lst):

    pat = re.compile(r'^[aeiou][a-zA-Z]*')

    for i in lst:

        match = re.match(pat, lst)

        if match:

            return i

    return ""



k = ['sad','Aad','mad','','asd','eas']

first_vow(k)

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

1

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

add a comment |

Check this:

vowels = ["a", "e", "i", "o", "u"]



def first_vowel(ss):

    for s in ss:

        if s and s[0] in vowels:

            return s

    return ""

Test:

first_vowel(["Drere", "fdff", "", "aBD", "eDFF"])

'aBD'

answered Jan 2 at 5:15

duong_dajgja

1,72611636

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

|
show 2 more comments

You can always use str.startswith() function too:

def first_vowel(lst):

    for elem in lst:

        if elem.startswith(('a','e','i','o','u')):

            return elem

    return ''

k = ['', 'b','sad','dad','mad','asd','eas']

print(first_vowel(k))

answered Jan 2 at 5:25

GeekSambhu

699819

add a comment |

l1 = ['hi', 'there', 'its', 'an' , 'answer', '']



def first_vowel(var):

    for i in var:

        if i.startswith(('a', 'e', 'i', 'o', 'u')): return i





first_vowel(l1) # output-> 'its'

answered Jan 2 at 5:28

Vicrobot

793518

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

You need:

def first_vowel(lst):

    # iterate over list using for loop

    for i in lst:

        # check if first letter is vowel

        if i and i[0] in ['a','e','i','o','u']:

            return i 

    return ""



k = ['sad','dad','mad','asd','eas']

print(first_vowel(k))

Or You can also use regex

import re



def first_vow(lst):

    pat = re.compile(r'^[aeiou][a-zA-Z]*')

    for i in lst:

        match = re.match(pat, lst)

        if match:

            return i

    return ""



k = ['sad','Aad','mad','','asd','eas']

first_vow(k)

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

1

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

add a comment |

You need:

def first_vowel(lst):

    # iterate over list using for loop

    for i in lst:

        # check if first letter is vowel

        if i and i[0] in ['a','e','i','o','u']:

            return i 

    return ""



k = ['sad','dad','mad','asd','eas']

print(first_vowel(k))

Or You can also use regex

import re



def first_vow(lst):

    pat = re.compile(r'^[aeiou][a-zA-Z]*')

    for i in lst:

        match = re.match(pat, lst)

        if match:

            return i

    return ""



k = ['sad','Aad','mad','','asd','eas']

first_vow(k)

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

1

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

add a comment |

You need:

def first_vowel(lst):

    # iterate over list using for loop

    for i in lst:

        # check if first letter is vowel

        if i and i[0] in ['a','e','i','o','u']:

            return i 

    return ""



k = ['sad','dad','mad','asd','eas']

print(first_vowel(k))

Or You can also use regex

import re



def first_vow(lst):

    pat = re.compile(r'^[aeiou][a-zA-Z]*')

    for i in lst:

        match = re.match(pat, lst)

        if match:

            return i

    return ""



k = ['sad','Aad','mad','','asd','eas']

first_vow(k)

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

You need:

def first_vowel(lst):

    # iterate over list using for loop

    for i in lst:

        # check if first letter is vowel

        if i and i[0] in ['a','e','i','o','u']:

            return i 

    return ""



k = ['sad','dad','mad','asd','eas']

print(first_vowel(k))

Or You can also use regex

import re



def first_vow(lst):

    pat = re.compile(r'^[aeiou][a-zA-Z]*')

    for i in lst:

        match = re.match(pat, lst)

        if match:

            return i

    return ""



k = ['sad','Aad','mad','','asd','eas']

first_vow(k)

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

edited Jan 2 at 5:27

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

answered Jan 2 at 5:13

AkshayNevrekar

5,28291940

1

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

add a comment |

1

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

What if i is empty? i[0] would make things crashed...

– duong_dajgja
Jan 2 at 5:17

@duong_dajgja you are right!! Edited my answer :-)

– AkshayNevrekar
Jan 2 at 5:19

add a comment |

Check this:

vowels = ["a", "e", "i", "o", "u"]



def first_vowel(ss):

    for s in ss:

        if s and s[0] in vowels:

            return s

    return ""

Test:

first_vowel(["Drere", "fdff", "", "aBD", "eDFF"])

'aBD'

answered Jan 2 at 5:15

duong_dajgja

1,72611636

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

|
show 2 more comments

Check this:

vowels = ["a", "e", "i", "o", "u"]



def first_vowel(ss):

    for s in ss:

        if s and s[0] in vowels:

            return s

    return ""

Test:

first_vowel(["Drere", "fdff", "", "aBD", "eDFF"])

'aBD'

answered Jan 2 at 5:15

duong_dajgja

1,72611636

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

|
show 2 more comments

Check this:

vowels = ["a", "e", "i", "o", "u"]



def first_vowel(ss):

    for s in ss:

        if s and s[0] in vowels:

            return s

    return ""

Test:

first_vowel(["Drere", "fdff", "", "aBD", "eDFF"])

'aBD'

answered Jan 2 at 5:15

duong_dajgja

1,72611636

Check this:

vowels = ["a", "e", "i", "o", "u"]



def first_vowel(ss):

    for s in ss:

        if s and s[0] in vowels:

            return s

    return ""

Test:

first_vowel(["Drere", "fdff", "", "aBD", "eDFF"])

'aBD'

answered Jan 2 at 5:15

duong_dajgja

1,72611636

answered Jan 2 at 5:15

duong_dajgja

1,72611636

answered Jan 2 at 5:15

duong_dajgja

1,72611636

answered Jan 2 at 5:15

duong_dajgja

1,72611636

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

|
show 2 more comments

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

this is working. thank you. What does s[0] mean with "and" in the syntax?

– F Hamad
Jan 2 at 6:07

@FHamad if s means if the string is not empty; and simply AND; s[0] is the first character in the string. I recommend you to take a simple python course, e.g., at tutorialspoint.com/python/python_strings.htm

– duong_dajgja
Jan 2 at 6:11

@FHamad If this helps please consider to mark this answer as accepted (if you don't mind). Thanks!

– duong_dajgja
Jan 2 at 7:19

i used this answer. is there a way to mark accepted? please let me know how, new to this site.

– F Hamad
Jan 2 at 14:58

@FHamad There is V mark right under <up> 3 <down> next to my answer. Please click on the V mark and it will turn green like this i.stack.imgur.com/LkiIZ.png

– duong_dajgja
Jan 2 at 15:04

|
show 2 more comments

You can always use str.startswith() function too:

def first_vowel(lst):

    for elem in lst:

        if elem.startswith(('a','e','i','o','u')):

            return elem

    return ''

k = ['', 'b','sad','dad','mad','asd','eas']

print(first_vowel(k))

answered Jan 2 at 5:25

GeekSambhu

699819

add a comment |

You can always use str.startswith() function too:

def first_vowel(lst):

    for elem in lst:

        if elem.startswith(('a','e','i','o','u')):

            return elem

    return ''

k = ['', 'b','sad','dad','mad','asd','eas']

print(first_vowel(k))

answered Jan 2 at 5:25

GeekSambhu

699819

add a comment |

You can always use str.startswith() function too:

def first_vowel(lst):

    for elem in lst:

        if elem.startswith(('a','e','i','o','u')):

            return elem

    return ''

k = ['', 'b','sad','dad','mad','asd','eas']

print(first_vowel(k))

answered Jan 2 at 5:25

GeekSambhu

699819

You can always use str.startswith() function too:

def first_vowel(lst):

    for elem in lst:

        if elem.startswith(('a','e','i','o','u')):

            return elem

    return ''

k = ['', 'b','sad','dad','mad','asd','eas']

print(first_vowel(k))

answered Jan 2 at 5:25

GeekSambhu

699819

answered Jan 2 at 5:25

GeekSambhu

699819

answered Jan 2 at 5:25

GeekSambhu

699819

answered Jan 2 at 5:25

GeekSambhu

699819

add a comment |

l1 = ['hi', 'there', 'its', 'an' , 'answer', '']



def first_vowel(var):

    for i in var:

        if i.startswith(('a', 'e', 'i', 'o', 'u')): return i





first_vowel(l1) # output-> 'its'

answered Jan 2 at 5:28

Vicrobot

793518

add a comment |

l1 = ['hi', 'there', 'its', 'an' , 'answer', '']



def first_vowel(var):

    for i in var:

        if i.startswith(('a', 'e', 'i', 'o', 'u')): return i





first_vowel(l1) # output-> 'its'

answered Jan 2 at 5:28

Vicrobot

793518

add a comment |

l1 = ['hi', 'there', 'its', 'an' , 'answer', '']



def first_vowel(var):

    for i in var:

        if i.startswith(('a', 'e', 'i', 'o', 'u')): return i





first_vowel(l1) # output-> 'its'

answered Jan 2 at 5:28

Vicrobot

793518

l1 = ['hi', 'there', 'its', 'an' , 'answer', '']



def first_vowel(var):

    for i in var:

        if i.startswith(('a', 'e', 'i', 'o', 'u')): return i





first_vowel(l1) # output-> 'its'

answered Jan 2 at 5:28

Vicrobot

793518

answered Jan 2 at 5:28

Vicrobot

793518

answered Jan 2 at 5:28

Vicrobot

793518

answered Jan 2 at 5:28

Vicrobot

793518

add a comment |

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