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+--- Thread: How do i append into dict? (/thread-20595.html)
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How do i append into dict? - Gateux - Aug-21-2019
for x in range(3):
patientlist = {}
patientname =input('Enter new name: ')
patientlist["Patient Name:"] = patientname
print(patientname)The above code prompts for input 3 times but when the dict is printed out, only the last input value gets appended into the dict. How do i append all values into the dict? And also I need the values to be in random order when printed out.
RE: How do i append into dict? - Malt - Aug-21-2019
Why you want to use dict? Dict key can't be duplicated. Either your dict key should be updated for every patient name
I hope you can use list
def patient_names():
patient_name = []
no_of_patients = int(input("Please input number of patients"))
count = 1
while count <= no_of_patients :
name = str(input("Please input the patient name: "))
patient_name.append(name)
count+=1
for name in range(len(patient_name)):
print(patient_name[name])
patient_names()
RE: How do i append into dict? - ThomasL - Aug-21-2019
I´m assuming you want to create a list instead of a dictionary, cause you named your dictionary patientlist which is a contradiction.
But let´s assume you want to use a dictionary you need to do it this way.
patients = {}
for x in range(3):
patient_name = input('Enter new name: ')
patients[patient_name] = patient_name
for key, value in patients.items():
print(key, value)But using the same content for key and the value is nonsense imho.So let´s assume you want to create a list of your patient names, do it this way.
patients = []
for x in range(3):
patient_name = input('Enter new name: ')
patients.append(patient_name)
for name in patients:
print(name)
RE: How do i append into dict? - perfringo - Aug-21-2019
Alternative approach could be:
>>> patients = [input('Enter new patient name: ') for patient in range(3)]
Enter new patient name: Bob
Enter new patient name: Alice
Enter new patient name: Guido
>>> print(*patients, sep='\n')
Bob
Alice
Guido
RE: How do i append into dict? - Malt - Aug-22-2019
(Aug-21-2019, 06:59 AM)perfringo Wrote: Alternative approach could be:
>>> patients = [input('Enter new patient name: ') for patient in range(3)] Enter new patient name: Bob Enter new patient name: Alice Enter new patient name: Guido >>> print(*patients, sep='\n') Bob Alice Guido
Pretty coool.. what this * operator mean here?
RE: How do i append into dict? - perfringo - Aug-22-2019
(Aug-22-2019, 04:24 AM)Malt Wrote: Pretty coool.. what this * operator mean here?
This is iterable unpacking (see PEP-448).
RE: How do i append into dict? - newbieAuggie2019 - Aug-22-2019
(Aug-22-2019, 04:24 AM)Malt Wrote:(Aug-21-2019, 06:59 AM)perfringo Wrote: Alternative approach could be:
>>> patients = [input('Enter new patient name: ') for patient in range(3)] Enter new patient name: Bob Enter new patient name: Alice Enter new patient name: Guido >>> print(*patients, sep='\n') Bob Alice Guido
Pretty coool.. what this * operator mean here?
The operator * separates the elements of a list by space.
There are different ways of printing the elements of a list. You can see in this program some of them:
patients = ['Bob', 'Alice', 'Guido', 'Janet', 'Pamela']
numbers = [1, 2, 3, 4, 5]
# Printing the list using a loop:
print("\n\nThese are the lists using a loop with elements printed in different lines:\n")
for x in range(len(patients)):
print(patients[x])
print()
for x in range(len(numbers)):
print(numbers[x])
# Printing the list using a loop:
print("\n\nThese are the same lists using a loop with elements printed in the same line:\n")
for x in range(len(patients)):
print(patients[x], end=" ")
print()
for x in range(len(numbers)):
print(numbers[x], end=" ")
# Printing the list without a loop, using
# the operator *, that separates the elements
# of the list by space:
print("\n\nThese are the same lists without a loop, using the operator *, that separates the elements of the list by space:\n")
print(*patients)
print()
print(*numbers)
# Printing the list without a loop, using
# the operator *, and sep operator with commas:
print("\n\nThese are the same lists without a loop, using the operator *, and sep operator with commas:\n")
print(*patients, sep = ", ")
print()
print(*numbers, sep = ", ")
# Printing the list without a loop, using
# the operator *, and sep operator with new line:
print("\n\nThese are the same lists without a loop, using the operator *, and sep operator with new line:\n")
print(*patients, sep = "\n")
print()
print(*numbers, sep = "\n")And here the output explaining what has been done:Output:These are the lists using a loop with elements printed in different lines:
Bob
Alice
Guido
Janet
Pamela
1
2
3
4
5
These are the same lists using a loop with elements printed in the same line:
Bob Alice Guido Janet Pamela
1 2 3 4 5
These are the same lists without a loop, using the operator *, that separates the elements of the list by space:
Bob Alice Guido Janet Pamela
1 2 3 4 5
These are the same lists without a loop, using the operator *, and sep operator with commas:
Bob, Alice, Guido, Janet, Pamela
1, 2, 3, 4, 5
These are the same lists without a loop, using the operator *, and sep operator with new line:
Bob
Alice
Guido
Janet
Pamela
1
2
3
4
5newbieAuggie2019
RE: How do i append into dict? - Malt - Aug-22-2019
(Aug-22-2019, 05:54 AM)newbieAuggie2019 Wrote:(Aug-22-2019, 04:24 AM)Malt Wrote:The operator * separates the elements of a list by space. There are different ways of printing the elements of a list. You can see in this program some of them:(Aug-21-2019, 06:59 AM)perfringo Wrote: Alternative approach could be:Pretty coool.. what this * operator mean here?>>> patients = [input('Enter new patient name: ') for patient in range(3)] Enter new patient name: Bob Enter new patient name: Alice Enter new patient name: Guido >>> print(*patients, sep='\n') Bob Alice Guidopatients = ['Bob', 'Alice', 'Guido', 'Janet', 'Pamela'] numbers = [1, 2, 3, 4, 5] # Printing the list using a loop: print("\n\nThese are the lists using a loop with elements printed in different lines:\n") for x in range(len(patients)): print(patients[x]) print() for x in range(len(numbers)): print(numbers[x]) # Printing the list using a loop: print("\n\nThese are the same lists using a loop with elements printed in the same line:\n") for x in range(len(patients)): print(patients[x], end=" ") print() for x in range(len(numbers)): print(numbers[x], end=" ") # Printing the list without a loop, using # the operator *, that separates the elements # of the list by space: print("\n\nThese are the same lists without a loop, using the operator *, that separates the elements of the list by space:\n") print(*patients) print() print(*numbers) # Printing the list without a loop, using # the operator *, and sep operator with commas: print("\n\nThese are the same lists without a loop, using the operator *, and sep operator with commas:\n") print(*patients, sep = ", ") print() print(*numbers, sep = ", ") # Printing the list without a loop, using # the operator *, and sep operator with new line: print("\n\nThese are the same lists without a loop, using the operator *, and sep operator with new line:\n") print(*patients, sep = "\n") print() print(*numbers, sep = "\n")And here the output explaining what has been done:I hope this could clarify this to you or somebody else. newbieAuggie2019
cool stuff!!.. thanks much
RE: How do i append into dict? - newbieAuggie2019 - Aug-22-2019
(Aug-22-2019, 09:11 AM)Malt Wrote: cool stuff!!.. thanks much
You're welcome!
RE: How do i append into dict? - perfringo - Aug-22-2019
In Python you should never do this:
>>> patients = ['Bob', 'Alice', 'Guido', 'Janet', 'Pamela'] >>> for x in range(len(patients)): ... print(patients[x])In Python you should iterate directly over items:
>>> for patient in patients: ... print(patient)