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Question 8

True or False? When using the dbm.dumb module, attempting to store a key or value that is not a string will raise an exception.

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Question 9

True or False? The following statement appears on the webpage at The Python Standard Library - 12.5. dbm - Interfaces to Unix "databases" .

Note: The dbm.dumb module is intended as a last resort fallback for the dbm module when a more robust module is not available. The dbm.dumb moduleis not written for speed and is not nearly as heavily used as the other database modules.

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Question 10

True or False? The function named dbm.dumb.open can be called to create or open a dumbdbm database and return a dumbdbm object.

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Question 11

True or False? The code in the top panel of Figure 1 produces the output shown in the bottom panel of Figure 1 .

Figure 1 . Question 11.
import dbm.dumb dumbDb = dbm.dumb.open('database', 'c')dumbDb[b'aNumber'] = 1234print(dumbDb.get('aNumber')) dumbDb.close()=============================================================================== 1234

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Question 12

True or False? The code in the top panel of Figure 3 produces the output shown in the bottom panel of Figure 3 .

Figure 3 . Question 12.
import dbm.dumb dumbDb = dbm.dumb.open('database', 'c')dumbDb[b'aNumber'] = b'1234'print(dumbDb.get('aNumber')) dumbDb.close()=============================================================================== b'1234'

Go to answer 12

Question 13

True or False? The code in the top panel of Figure 4 produces the output shown in the bottom panel of Figure 4 .

Figure 4 . Question 13.
import dbm.dumb dumbDb = dbm.dumb.open('database', 'c')empName = b'Joe' dumbDb[b'name']= empName dumbDb[b"cubicle"]= b"639" dumbDb[b"phone"]= b"617.665.2154" if(empName in dumbDb):print('name: ', dumbDb.get(b'name')) print('cubicle: ', dumbDb.get(b'cubicle'))print('phone: ', dumbDb.get(b'phone')) else:print("Not in dumbDb") dumbDb.close()=============================================================================== name: b'Joe'cubicle: b'639' phone: b'617.665.2154'

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Question 14

True or False? The code in the top panel of Figure 6 produces the output shown in the bottom panel of Figure 6 .

Figure 6 . Question 14.
import dbm.dumb dumbDb = dbm.dumb.open('database', 'c')empName = b'Joe' dumbDb[b'name']= empName dumbDb[b"cubicle"]= b"639" dumbDb[b"phone"]= b"617.665.2154" if(b'name' in dumbDb):print('name: ', dumbDb.get(b'name')) print('cubicle: ', dumbDb.get(b'cubicle'))print('phone: ', dumbDb.get(b'phone')) else:print("Not in dumbDb") dumbDb.close()=============================================================================== name: b'Joe'cubicle: b'639' phone: b'617.665.2154'

Go to answer 14

Question 15

True or False? The code in the top panel of Figure 7 produces the output shown in the bottom panel of Figure 7 .

Figure 7 . Question 15.

import dbm.dumb dumbDb = dbm.dumb.open('database', 'c')#Create keys and values myKeys = b'name',b'cubicle',b'phone',b'age',b'gender',b'marital'myValues = b'Joe',b'639',b'333.444.5555',b'39',b'male',b'married' #Populate the databasefor cnt in range(len(myKeys)): dumbDb[myKeys[cnt]]= myValues[cnt] print('Get and display values')values = dumbDb.values() for value in values:print(value) print()#blank lineprint('Get and display keys') keys = dumbDb.keys()for key in keys: print(key)print() print('Attempt to pop and display two values')print(dumbDb.pop(b'phone','no phone')) print(dumbDb.pop(b'weight','no weight'))print() print('Get and display keys and values')print('Database length',len(dumbDb)) items = dumbDb.items()for item in items: print(item)print() print('Delete a key/value pair and display again')del dumbDb[b'cubicle'] print('Database length',len(dumbDb))items = dumbDb.items() for item in items:print(item) dumbDb.close()=============================================================================== Get and display valuesb'name' b'age'b'phone' b'marital'b'cubicle' b'gender'Get and display keys b'Joe'b'39' b'333.444.5555'b'married' b'639'b'male' Attempt to pop and display two valuesb'333.444.5555' no weightGet and display keys and values Database length 5(b'name', b'Joe') (b'age', b'39')(b'marital', b'married') (b'cubicle', b'639')(b'gender', b'male') Delete a key/value pair and display againDatabase length 4 (b'name', b'Joe')(b'age', b'39') (b'marital', b'married')(b'gender', b'male')

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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