# Noemi Cabrera # 21 October 2021 # In this lesson, I learned to iterate a string by character using the for loop. # The in keyword and any variable name that would contain the iterated letters of the # loop are used with the for keyword. Each letter is printed in a different line. # Also, you can use string slicing in the for loop to use a certain section of a string. # I didn't have any difficulties in this lesson.

# [ In this code, the for loop is used to iterate through each letter in the string # "cello". A variable of any name can be created to contain each of the letters, in # this case the variable is letter. The letters are printed in a new line every time.] # review and run example word = "cello" for letter in word: print(letter)

# [ In this code, the for loop is used to iterate through each letter in the string # "trumpet". In this case, The variable item contains each letter. ] # review and run example # note: the variable 'letter' changed to 'item' word = "trumpet" for item in word: print(item)

# [ In this code, the for loop is used to iterate through each letter in the string # "piano". In this case, the variable xyz contains each letter. ] review and run example # note: variable is now 'xyz' # using 'xyz', 'item' or 'letter' are all the same result word = "piano" for xyz in word: print(xyz)

# [ In this for loop, the variable (ltr) containing each letter is tested to see of it's # equal to "y". If it's true, then the letter is converted to upper case. If not true, # then the letter will print as it is. This loop only runs one time.] review and run # creates a new string (new_name) adding a letter (ltr) each loop # Q?: how many times will the loop run? student_name = "Skye" new_name = "" for ltr in student_name: if ltr.lower() == "y": new_name += ltr.upper() else: new_name += ltr print(student_name,"to",new_name)

# [ The variable first_name gets input for a first name. ] Get user input for first_name # [ The for loop iterates through each letter of the input. The variable character # would contain each letter. ] iterate through letters in first_name # - print each letter on a new line first_name = input("Please, enter your first name:").title() for character in first_name: print(character)

# [ This program gathers input for a first name. If the letter "i" or "o" is found in # the first_name variable, then that letter will be capitalized. If not, then the # entered first name will print as it is. ] # Create capitalize-io first_name = input("Please, enter your first name:").title() new_name = '' for character in first_name: if character.lower() == "i": new_name += character.upper() elif character.lower() == "o": new_name += character.upper() else: new_name += character print(new_name)

# [ In this code the for loop and string index slicing are used together. Instead of # iterating the entire string "Skye," only the first 3 characters are iterated because # the slice [:3] is used. ] review and run example student_name = "Skye" for letter in student_name[:3]: print(letter)

# Iterate BACKWARDS # [ Instead of iterating the entire string "Skye" backwards, only the first 3 characters # are iterated by using [2::-1]. This indicates the slice starts at index 2 and goes # backwards (-1). ] review and run example student_name = "Skye" # start at "y" (student_name[2]), iterate backwards for letter in student_name[2::-1]: print(letter)

# [ In this code, other_word consists of all the characters of "juxtaposition". The [:] # method indicates the default start is at index 0 and the default end is the last # charactre of the string. ] create & print a variable, other_word, made of every other # letter in long_word long_word = "juxtaposition" other_word = long_word[:] print(other_word)

# Mirror Color # [The variable fav_color gets input for a favorite color ] get user input, fav_color # [ The slice [::-1] reverses fav_color. Then, the original color is added to it to # show both, like in a mirror. ] print fav_color backwards + fav_color # example: "Red" prints "deRRed" fav_color = input("Enter your favorite color: ").lower() print(fav_color[::-1] + fav_color)