need on creating list of discretionary in python

Question

I am trying to create a list of dictionaries using the following python code, but I get a duplicate copy in list only

my code is :

def jsonHandler():
    mqttDataToPublish = {}
    jsonreaddata = []
    jsoncommadnData = {}
   
    for i in range(0,2,1):
        for j in range(0,3,1):
            print()
            print()
            print("befor request jsonreaddata",jsonreaddata)
            print("first URL is ", j+1)
            jsoncommadnData['command'] = j+1
            jsoncommadnData['data'] = j+2
            print("command and it url",jsoncommadnData)
            print()
            print()
            print("after request jsonreaddata",jsonreaddata)
            jsonreaddata.append(jsoncommadnData)
            print()
            print()
            print("after append jsonreaddata",jsonreaddata)
def main():
    jsonHandler()
if __name__ == "__main__":
    main()

expected output is jsonreaddata = {[{'command': 1, 'data': 2}, {'command': 2, 'data': 3}, {'command': 3, 'data': 4}......

But got the following: all duplicate after append jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}]

logs are:

python3 test.py

befor request jsonreaddata [] first URL is 1 command and it url {'command': 1, 'data': 2}

after request jsonreaddata []

after append jsonreaddata [{'command': 1, 'data': 2}]

befor request jsonreaddata [{'command': 1, 'data': 2}] first URL is 2 command and it url {'command': 2, 'data': 3}

after request jsonreaddata [{'command': 2, 'data': 3}]

after append jsonreaddata [{'command': 2, 'data': 3}, {'command': 2, 'data': 3}]

befor request jsonreaddata [{'command': 2, 'data': 3}, {'command': 2, 'data': 3}] first URL is 3 command and it url {'command': 3, 'data': 4}

after request jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}]

after append jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}]

befor request jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}] first URL is 1 command and it url {'command': 1, 'data': 2}

after request jsonreaddata [{'command': 1, 'data': 2}, {'command': 1, 'data': 2}, {'command': 1, 'data': 2}]

after append jsonreaddata [{'command': 1, 'data': 2}, {'command': 1, 'data': 2}, {'command': 1, 'data': 2}, {'command': 1, 'data': 2}]

befor request jsonreaddata [{'command': 1, 'data': 2}, {'command': 1, 'data': 2}, {'command': 1, 'data': 2}, {'command': 1, 'data': 2}] first URL is 2 command and it url {'command': 2, 'data': 3}

after request jsonreaddata [{'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}]

after append jsonreaddata [{'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}]

befor request jsonreaddata [{'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}, {'command': 2, 'data': 3}]
first URL is 3 command and it url {'command': 3, 'data': 4}

after request jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}]

after append jsonreaddata [{'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}, {'command': 3, 'data': 4}]

can help what is missing or wrong in my code