python equivalent of spread operator code example

Example 1: python spread operator

arr = [3, 4, 5]
extended_arr = [1, 2, *arr]

Example 2: spread in python

#df = df[['gene_symbol', 'sample_id', 'fc']]
df = df.pivot(index='gene_symbol',columns='sample_id',values='fc')
print (df)
sample_id       S1     S2
gene_symbol              
a            100.0    1.3
b            100.0   14.0
c            112.0  125.0