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I'm new to python. I just want to print the data in postgresql database into a dictionary. The database consist of 3 column (name, department, overall_percentage) and I have 3 tables of class A, B...
#3: Question closed
by
Karl Knechtel
·
2026-04-16T18:25:57Z (5 months ago)
#2: Post edited
by
samcarter
·
2026-04-16T18:16:07Z (5 months ago)
code markup
i just want to print the data in postgresql database into a dictionary.
I'm new to python. i just want to print the data in postgresql database into a dictionary.- The database consist of 3 column (name, department, overall_percentage) and I have 3 tables of class A, B, C.
Here what i need is to print the nested dictionary where the class a is key and inside nested dictionary the name as key and respective values in the row is value.here is my existing code:`import psycopg2- conn = psycopg2.connect(
- database="CONNE py",
- user='postgres',
- password='asdf',
- host='localhost',
- port= '5432'
- )
- cursor=conn.cursor()
- tables = ["Class_A", "Class_B", "Class_C"]
- nested_dict={}
- for table in tables:
- cursor.execute(f"SELECT * FROM {table}")
- inner_dict={'name':table[1],'department':[2], 'overall_percentage':[3]}
- nested_dict[table[0]]=nested_dict.get(table[0],[])+[inner_dict]
- print(f"{table}:",nested_dict)
cursor.close()`
- I'm new to python. I just want to print the data in postgresql database into a dictionary.
- The database consist of 3 column (name, department, overall_percentage) and I have 3 tables of class A, B, C.
- Here what I need is to print the nested dictionary where the class a is key and inside nested dictionary the name as key and respective values in the row is value.
- Here is my existing code:
- ```
- import psycopg2
- conn = psycopg2.connect(
- database="CONNE py",
- user='postgres',
- password='asdf',
- host='localhost',
- port= '5432'
- )
- cursor=conn.cursor()
- tables = ["Class_A", "Class_B", "Class_C"]
- nested_dict={}
- for table in tables:
- cursor.execute(f"SELECT * FROM {table}")
- inner_dict={'name':table[1],'department':[2], 'overall_percentage':[3]}
- nested_dict[table[0]]=nested_dict.get(table[0],[])+[inner_dict]
- print(f"{table}:",nested_dict)
- cursor.close()
- ```
#1: Initial revision
by
prem
·
2026-04-16T10:15:49Z (5 months ago)
i just want to print the data in postgresql database into a dictionary.
I'm new to python. i just want to print the data in postgresql database into a dictionary.
The database consist of 3 column (name, department, overall_percentage) and I have 3 tables of class A, B, C.
Here what i need is to print the nested dictionary where the class a is key and inside nested dictionary the name as key and respective values in the row is value.
here is my existing code:
`import psycopg2
conn = psycopg2.connect(
database="CONNE py",
user='postgres',
password='asdf',
host='localhost',
port= '5432'
)
cursor=conn.cursor()
tables = ["Class_A", "Class_B", "Class_C"]
nested_dict={}
for table in tables:
cursor.execute(f"SELECT * FROM {table}")
inner_dict={'name':table[1],'department':[2], 'overall_percentage':[3]}
nested_dict[table[0]]=nested_dict.get(table[0],[])+[inner_dict]
print(f"{table}:",nested_dict)
cursor.close()`