I'm trying to plot a connected graph (like a connected line graph), if I do anychanges on my code, I'm unable to see the graph.

My plot as of now, is filled with DOT's !

Any idea, how can I generate a line-graph/plot. Help! Thanks in advance.

x = np.zeros(sheet_1.max_row)
y = np.zeros(sheet_1.max_row)

print (sheet_1.max_row)
print (sheet_1.max_column)

f = open("Bad_Data_Points_CD25.txt", "w")

for i in range(0, 10): #change to 1000
    for j in range(0, 289): # change to 289

        x[i] = sheet_1.cell(row=i + 1, column=j + 1).value #J + 1 changed to J
        print x[i]
        plt.plot(i, x[i],'go-', label='Values')



plt.grid(True)

plt.title("ABCD")
plt.ylabel("ABCD")
plt.ylim(0,0.15)
plt.xlabel("ABCD")
plt.xlim(0, 10)

plt.show()