I'm a beginner and I don't speak english very well so sorry about that.
I'd like to draw the bifurcation diagram of the sequence :
x(n+1)=u*x(n)*(1-x(n)) with x(0)=0.7 and u between 0.7 and 4.

I am supposed to get something like this :

[![https://i.stack.imgur.com/T4gyF.png](https://i.stack.imgur.com/T4gyF.png)](https://i.stack.imgur.com/T4gyF.png)

So, for each value of u, I'd like to calculate the accumulation points of this sequence. That's why I'd like to code something that could display every points (u;x1001),(u;x1002)...(u;x1050) for each value of u.

I did this :

```
import matplotlib.pyplot as plt
import numpy as np
P=np.linspace(0.7,4,10000)
m=0.7
Y=[m]
l=np.linspace(1000,1050,51)
for u in P:
    X=[u]
    for n in range(1001):
      m=(u*m)*(1-m)
    break 
    for l in range(1051):
      m=(u*m)*(1-m)
      Y.append(m)
plt.plot(X,Y)
plt.show()

```

And, I get a blank graphic.

This is the first thing I try to code and I don't know anything yet in Python so I need help please.