Answers for "python get value from dictionary"

0

how to get the value of key in python

print(dict.get("key"))
Posted by: Guest on May-17-2020
2

get dictionary value in python

my_dict = {'a': 1, 'b': 2, 'c': 3}
# keys = list(item.keys())
# the upper commented code give the list of the keys.
keys = ['a', 'b', 'c', 'd'] # if some body give the list of the keys that wasn't match with my_dict

for key in keys:
    print(my_dict.get(key, 'default value when key not exist'))

"""output:
1
2
3
default value when key not exist
"""
Posted by: Guest on August-05-2021
0

get a value from a dictionary python

#!/usr/bin/python

dict = {'Name': 'Zabra', 'Age': 7}
print "Value : %s" %  dict.get('Age')
print "Value : %s" %  dict.get('Education', "Never")
Posted by: Guest on November-30-2020
2

how to get the value of key in python

print(dict["key"])
Posted by: Guest on May-17-2020
7

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
Posted by: Guest on April-13-2020
1

python dictionary access value by key

# Create a list of dictionary
datadict = [{'Name': 'John', 'Age': 38, 'City': 'Boston'},
 {'Name': 'Sara', 'Age': 47, 'City': 'Charlotte'},
 {'Name': 'Peter', 'Age': 63, 'City': 'London'},
 {'Name': 'Cecilia', 'Age': 28, 'City': 'Memphis'}]

# Build a function to access to list of dictionary
def getDictVal(listofdic, name, retrieve):
    for item in listofdic:
        if item.get('Name')==name:
            return item.get(retrieve)
          
 # Use the 'getDictVal' to read the data item
getDictVal(datadict, 'Sara', 'City') # Return 'Charlotte'

# -------------------
# to convert a dataframe to data dictionary
df = pd.DataFrame({'Name': ['John', 'Sara','Peter','Cecilia'],
                   'Age': [38, 47,63,28],
                  'City':['Boston', 'Charlotte','London','Memphis']})

datadict = df.to_dict('records')
Posted by: Guest on October-22-2020

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