String Processing - 36 Days - Learn Python Online in 100 Days

Jun 13, 2023#python学习36

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Today's lesson focused on handling strings, including methods like string.lower(), string.upper(), string.title(), string.capitalize(), and string.strip(). The order of these functions is important, as demonstrated in the example 'phone'.capitalize().strip(). The practice exercise involved creating a contact list program that does not allow duplicate names.

Records#

Today's study is about handling strings.
1. string.lower() = converts all letters to lowercase
2. string.upper() = converts all letters to uppercase
3. string.title() = capitalizes the first letter of each word
4. string.capitalize() = capitalizes the first letter of the first word
5. string.strip() = ignores spaces
When handling strings, pay attention to the order of functions. For example, for the string = ' phone'.capitalize().strip(), the result after execution is phone, not Phone. This is because capitalize() capitalizes the letters after removing spaces.
Today's exercise: Create an address book program that does not allow duplicates.

namelist = []
while True:
  firstname = input("First Name: ").title()
  lastname = input("Last Name: ").title()
  myname = f"{firstname} {lastname}"
  if myname not in namelist:
    namelist.append(myname)
    print(myname)
  else:
    print("ERROR: Duplicate name")