Dictionary -- a few operations

Script

#!/usr/local/bin/python3.7

school = {"name": "Evergreen Elementary School", "grade": 7, "teacher": "Mr. Johnson", "subject": "Mathematics", "speciality": "Calculus"}

print()
print(school)
print()

person = school["teacher"]

equation = school.get("speciality")

school["speciality"] = "Algebra"

# Loop through the dictionary

for x in school:
  print(x)

print()

for q in school:
  print(school[q])

print()

for s, t in school.items():
  print(s,"\b:", t)

print()

school["city"] = "San Jose"

school["state"] = "California"

print()

print(school)

print()

school.pop("grade")

print(school)
print()
print(len(school))
print()
del school["subject"]

print(school)

print()


Execution


{'name': 'Evergreen Elementary School', 'grade': 7, 'teacher': 'Mr. Johnson', 'subject': 'Mathematics', 'speciality': 'Calculus'}

name
grade
teacher
subject
speciality

Evergreen Elementary School
7
Mr. Johnson
Mathematics
Algebra

name: Evergreen Elementary School
grade: 7
teacher: Mr. Johnson
subject: Mathematics
speciality: Algebra


{'name': 'Evergreen Elementary School', 'grade': 7, 'teacher': 'Mr. Johnson', 'subject': 'Mathematics', 'speciality': 'Algebra', 'city': 'San Jose', 'state': 'California'}

{'name': 'Evergreen Elementary School', 'teacher': 'Mr. Johnson', 'subject': 'Mathematics', 'speciality': 'Algebra', 'city': 'San Jose', 'state': 'California'}

6

{'name': 'Evergreen Elementary School', 'teacher': 'Mr. Johnson', 'speciality': 'Algebra', 'city': 'San Jose', 'state': 'California'}