# Count the number of As, Cs, Ts and Gs in a sequence. 

DNA = "my_seq"

A_count = DNA.count("A")

C_count = DNA.count("C")

T_count = DNA.count("T")

G_count = DNA.count("G")

print(A_count)

print(C_count)

print(T_count)

print(G_count)
