simple solution with concat.
Intuition\nuse pd.concat to concatenate dataframes.\n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time complexity:\nO(1)\n\
# Intuition\nuse pd.concat to concatenate dataframes.\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\nO(1)\n\n- Space complexity:\nO(1)\n\n# Code\n```pythondata []\nimport pandas as pd\n\ndef concatenateTables(df1: pd.DataFrame, df2: pd.DataFrame) -> pd.DataFrame:\n    return pd.concat([df1,df2])\n```
['Pandas']