PYTHON

python iterate dictionary key value

a_dict = {'color': 'blue', 'fruit': 'apple', 'pet': 'dog'}
for key, value in a_dict.items():
  print(key, '->', value)

python loop through dictionary

dictionary = {52:"E",126:"A",134:"B",188:"C",189:"D"}
for key, value in dictionary.items():
	print(key)
	print(value)

python iterate through dictionary

a_dict = {'apple':'red', 'grass':'green', 'sky':'blue'}
for key in a_dict:
  print key # for the keys
  print a_dict[key] # for the values

loop throughthe key and the values of a dict in python

a_dict = {"color": "blue", "fruit": "apple", "pet": "dog"}

# Will loop through the dict's elements (key, value) WITHOUT ORDER
for key, value in a_dict.items():
  print(key, '->', value)

dict iterate to

Python dictionary[  a type of mapping data type] iterates only keys()

python Looping through all values dictionary

fav_numbers = {'eric': 17, 'ever': 4}
for number in fav_numbers.values():
	print(str(number) + ' is a favorite')

python loop through dictionary

new_list = [something(key, value) for key, value in a_dict.items()]

loop through dictionary in key order python

# Loop through dictionary in key order
di = {'b': 2, 'c': 3, 'a': 1}
for k, v in sorted(di.items()):
    print(k, v)
# a 1
# b 2
# c 3

python loop through dictionary

d = {'x': 1, 'y': 2, 'z': 3} 
for key in d:
    print key, 'corresponds to', d[key]

Iterating Through Dictionaries with For Loops

Titanic_cast = {
           "Leonardo DiCaprio": "Jack Dawson",
           "Kate Winslet": "Rose Dewitt Bukater",
           "Billy Zane": "Cal Hockley",
       }

print("Iterating through keys:")
for key in Titanic_cast:
    print(key)

print("
Iterating through keys and values:")
for key, value in Titanic_cast.items():
    print("Actor/ Actress: {}    Role: {}".format(key, value))

# output -
# Iterating through keys:
# Billy Zane
# Leonardo DiCaprio
# Kate Winslet

# Iterating through keys and values:
# Actor/ Actress: Billy Zane    Role: Cal Hockley
# Actor/ Actress: Leonardo DiCaprio    Role: Jack Dawson
# Actor/ Actress: Kate Winslet    Role: Rose Dewitt Bukater

fastest way to iterate dictionary python

# iterating through dictionary keys fast
dictKeys = list(nameOfDict.keys())

for i in range(len(dictKeys)):
  print(dictKeys[i])
  
  
# iterating through dictionary values fast
dictValues = list(nameOfDict.values())

for i in range(len(dictKeys)):
  print(dictKeys[i])

for loop items dictionary in python

jjj = {'chuck': 1, 'fred': 42, 'jan': 100}
# If you want only the keys
for key in jjj:
    print(key)
# if you want only the values
for key in jjj:
    print(jjj[key])
# if you want both keys and values with items
# Using the above you can get either key or value separately if you want
for key, value in jjj.items():
    print(key, value)

python loop dictionary

for key, value in d.items():