How to define two functions run simultaneously within a function?

[Alberto]

Dear Python Users,

I have the code below. The problem is that two functions are interdependent and should be run simultaneously (line - 8 and 11). How can I run the re-construct the code? The Final output is the value of "call" the gives the minimum value of "diff"

warrant_price = []
diff = []
def results(S0, K, T, r, sigma, k, N, M, Iteration):
    for i in range(1, Iteration):
        dilution = N/(N +k*M)
        Value_2 = 10000
        Value_1= 10000
        warrant = dilution*bsm_call_value(Value_2/N,100,1,0.1,0.2)
        warrant_price.append(warrant) 
        Value_2 = Value_1 + warrant*M
        diff1 = Value_1 - Value_2
        diff.append(diff1) 
        
print(results(100,100,1,0.1,0.2,1,100,10, 10))
call_df = pd.DataFrame({'warrant_price': warrant_price})
diff_df = pd.DataFrame({'diff': diff})
merged_df = call_df.join(diff_df)
merged_df.loc[merged_df['diff'].idxmin()]