webinar-strings-jack-tripper-2022-05-07.py

# We once called it "All the Ways to Print"... but printing isn't all we do to strings.
# So we changed it to "String Manipulation and Printing"
# but now it's
# "Your Strings Are Jack Tripper"

name = "Sue"
# different way to build up a longer string

# Concatenation with +
myString = "My name is " + str(name) + ", how do you do?"
print(myString)
print("My name is " + name + ", how do you do?")
# "data conversion specifiers" or "string modulo" %
print("My name is %s, how do you do?" % (name))

# str method .format()
print("My name is {}, how do you do?".format(name))
# f strings
print(f"My name is {name}, how do you do?")

import math
print(math.pi)
print("Pi to 3 decimal places is {:.3f}".format(math.pi))
print(f"Pi to 3 decimal places is {math.pi:.3f}")

print("John", "Paul", "George", "Ringo")
# myString = f"{} {} {} {}"
print("John", "Paul", "George", "Ringo", end="", sep="-->") # default value of end is "\n", sep is " "
print() # if you use END, wrap with a call to print() with \n
print("George M", "Billy P", "Pattie", "Yoko")

# One of the 2 big mistakes I see with strings...
# BIG MISTAKE #1 !!!
# if you override END, always do a clean print() after, as mentioned in ZyBooks 2.9
# a new clean line after using print(end="whatever") is expected. If the Labs or exam
# ever vary from this, and it's rare, it's explicitly stated in the question (such as Lab 9.17).


# BIG MISTAKE #2 !!!
# The other biggest mistake?
# Not using strip() on inputs!
# The input() function returns a str...

# Know your WHITESPACE
" " # a space, from hitting the spacebar
# There are also about 20-25 other simple spaces in Unicode
"\n" # new line return
"\r" # carriage return, back to beginning of the current line
"\t" # tab
"\b" # backspace
"\f" # form feed
# myVar = input().strip()

muppetDict = {
    "Kermit": "the Frog",
    "Fozzy": "the Bear"
}
myVar = "Kermit " # "Kermit" is a dict key, but "Kermit ", "Kermit\r", etc ARE NOT
myVar = myVar.strip()
if myVar in muppetDict:
    print("Kermit is in the dictionary.")
else:
    print("Nope. Not there.")

# strip when recasting
myVar = int(input().strip())
myVar = float(input().strip())