<view> = <dict>.keys() # Coll. of keys that reflects changes.
<view> = <dict>.values() # Coll. of values that reflects changes.
<view> = <dict>.items() # Coll. of key-value tuples that reflects chgs.
value = <dict>.get(key, default=None) # Returns default if key is missing.
value = <dict>.setdefault(key, default=None) # Returns and writes default if key is missing.
<dict> = collections.defaultdict(<type>) # Creates a dict with default value of type.
<dict> = collections.defaultdict(lambda: 1) # Creates a dict with default value 1.
<dict> = dict(<collection>) # Creates a dict from coll. of key-value pairs.
<dict> = dict(zip(keys, values)) # Creates a dict from two collections.
<dict> = dict.fromkeys(keys [, value]) # Creates a dict from collection of keys.
<dict>.update(<dict>) # Adds items. Replaces ones with matching keys.
value = <dict>.pop(key) # Removes item or raises KeyError.
{k for k, v in <dict>.items() if v == value} # Returns set of keys that point to the value.
{k: v for k, v in <dict>.items() if k in keys} # Returns a dictionary, filtered by keys.dictionary = {
"name": "Elie",
"family name": "Carcassonne",
"date of born": "01/01/2001",
"list": ["hey", "hey"]
}txt = "this is a wild string"
print(txt.replace("i", "x")) # print string with all i characters replaced with x
print(txt.replace("i", "x", 2)) # print string with first two i characters found with x
print(txt.upper()) # print string in all uppercase letters
print(txt.lower()) # print string in all uppercase letters
print(ord('A')) # print the ordinal value of a character
print(chr(95)) # print character from its ordinal value
print('Yes' * 5) # print string Yes 5 times
# Reference strings by index
print(txt[0]) # print first letter of string from starting index
print(txt[0:2]) # print first two letters from starting index
print(txt[1:]) # print all characters except the first letter
print(txt[0::2]) # print every second character
print(txt[::-1]) # print string in reverse
print(txt[-1]) # print the last character in a string
print(txt[-2:]) # print the last who characters in a string
# check if a wild is found in txt
if "wild" in txt:
print("wild is found in txt")
# check if a blah is not found in txt
if "blah" not in txt:
print("is not found in txt")
# Check if txt starts with this
if txt.startswith("this"):
print("Starts with this")
# check if txt ends with ing
if txt.endswith("ing"):
print("Ends with ing")
# Split a string into a tuple when the delimiter is first encountered
txt = 'random-data'
data_split = txt.partition('-')
print(data_split)
# output ('random', '-', 'data')
len(txt) # Return length of string
# loop through each character in string
for char in txt:
print(char)
# Display price with commas and 2 digit precision
price = 9749000
display_price = f"My price {price:,.2f}"
print(display_price)