How can I print hello and all female members-CodePudding

test.json

{
    "A Company":[{"female":["Jessica","Eve"]},{"male":["Mike","Peter"]}],
    "B Company":[{"female":["Laura","Pamela"]},{"male":["Mark","Steve"]}]
}

test.py

import json

f = open('test.json',)
data = json.load(f)
for v in data.values():
    for element in v:
        print(element)

Output:

{'female': ['Jessica', 'Eve']}
{'male': ['Mike', 'Peter']}
{'female': ['Laura', 'Pamela']}
{'male': ['Mark', 'Steve']}

How can I print this: "Hello Jessica" "Hello Eve" "Hello Laura" "Hello Pamela"?

CodePudding user response：

You can use an iterator to extract then names and a for-loop to print the greetings without building an intermediate list:

data = {
    "A Company":[{"female":["Jessica","Eve"]},{"male":["Mike","Peter"]}],
    "B Company":[{"female":["Laura","Pamela"]},{"male":["Mark","Steve"]}]
}

names = (name for groups in data.values() 
              for group in groups 
              for name in group.get("female",[]))


for name in names: print("Hello",name)

Hello Jessica
Hello Eve
Hello Laura
Hello Pamela

CodePudding user response：

You missed the innermost loop, where you iterate the inner records and check if they are Males or Females.

Please see the example:

import json

json_file = """
{
    "A Company":[{"female":["Jessica","Eve"]},{"male":["Mike","Peter"]}],
    "B Company":[{"female":["Laura","Pamela"]},{"male":["Mark","Steve"]}]
}
"""

parsed = json.loads(json_file)

for val in parsed.values():
    for record in val:
        # This below is the innermost loop
        for key, value in record.items():
            # If it's female then we use list comprehension to print the greetings
            if key == "female":
                [print(f"Hello {name}") for name in value]