Recently I started learning python. I want to define a function for columns in data frame. I want square of every value in column. Please check this code. It results in error in fifth line.
def new_fun(df,col_name='Open'): out = [] col=df[col_name] for element in col: out[element].append(element**2) return out Python is its use of indentation to highlight the blocks of code. All statements with the same distance to the right belong to the same block of code. If a block has to be more deeply nested, it is simply indented further to the right.
You need to more indented in 5th line.
def new_fun(df,col_name='Open'): out = [] col=df[col_name] for element in col: out[element].append(element**2) return out 