Want to try some string methods yourself? Give it a go! Fill in the gaps in the initials function so that it returns the initials of the words contained in the phrase received, in upper case. For example: "Universal Serial Bus" should return "USB"; "local area network" should return "LAN”.

string.py

def initials(phrase):
    words = phrase.split()
    result = ""
    for word in words:
        x=list(word)
        if x[0].isupper():
            result +=x[0]
        elif x[0].islower():
            result +=x[0].upper()
            
    return result

print(initials("Universal Serial Bus")) # Should be: USB
print(initials("local area network")) # Should be: LAN
print(initials("Operating system")) # Should be: OS

` def initials(phrase):
words =phrase.split()
result=""+""
for word in words:
result += word[0].upper()
return result

print(initials("Universal Serial Bus")) # Should be: USB
print(initials("local area network")) # Should be: LAN
print(initials("Operating system")) # Should be: OS

Here is output:
USB
LAN
OS

`