речник на python получава стойност по подразбиране
dictionary = {"message": "Hello, World!"}
data = dictionary.get("message", "")
print(data) # Hello, World!
python получава стойност от речник
dict = {'color': 'blue', 'shape': 'square', 'perimeter':20}
dict.get('shape') #returns square
#You can also set a return value in case key doesn't exist (default is None)
dict.get('volume', 'The key was not found') #returns 'The key was not found'
get() python
# The get() method on dicts
# and its "default" argument
name_for_userid = {
382: "Alice",
590: "Bob",
951: "Dilbert",
}
def greeting(userid):
return "Hi %s!" % name_for_userid.get(userid, "there")
>>> greeting(382)
"Hi Alice!"
>>> greeting(333333)
"Hi there!"
'''When "get()" is called it checks if the given key exists in the dict.
If it does exist, the value for that key is returned.
If it does not exist then the value of the default argument is returned instead.
'''
# transferred by @ebdeuslave
# From Dan Bader - realpython.com
как да получите стойността на ключа в python
print(dict["key"])
за да получите стойността от речника на python
#!/usr/bin/python
dict = {'Name': 'Zabra', 'Age': 7}
print "Value : %s" % dict.get('Age')
print "Value : %s" % dict.get('Education', "Never")
как да се получи стойност от key dict в python
# Get a value from a dictionary in python from a key
# Create dictionary
dictionary = {1:"Bob", 2:"Alice", 3:"Jack"}
# Retrieve value from key 2
entry = dictionary[2]
# >>> entry
# Alice