Test speed of LEP python script

[lawrenceleejr]

Immediately breaking out of loop (roughly the constant overhead before event loop:

real	0m30.158s
user	0m27.465s
sys	0m3.644s

---

Time to run over 100 events as default as of current HEAD (9a7547e) of LEP branch

real	0m43.254s
user	0m40.443s
sys	0m3.778s

(t0+13s)

[lawrenceleejr]

Continuing before awk array is made from array:

real	0m35.044s
user	0m32.298s
sys	0m3.690s

(t0+5s)

Continuing before fastest does clustering

real	0m35.162s
user	0m32.442s
sys	0m3.650s

(t0+5s)

---

Continuing after fastest does clustering

real	0m37.490s
user	0m34.815s
sys	0m3.622s

(t0+7s)

[lawrenceleejr]

Shaved off a few seconds by replacing the array building:

    # temp = []
    # for k in range(nParticles[i]):
    #     temp_part = {}
    #     temp_part["px"] = px_branch[i][k]
    #     temp_part["py"] = py_branch[i][k]
    #     temp_part["pz"] = pz_branch[i][k]
    #     temp_part["E"] = np.sqrt(M_branch[i][k]**2 + px_branch[i][k]**2 + py_branch[i][k]**2 + pz_branch[i][k]**2)
    #     temp.append(temp_part)
    temp = [{
        'pt':pt_branch[i][k],
        'eta':eta_branch[i][k],
        'phi':phi_branch[i][k],
        'M' :M_branch[i][k]#np.sqrt(M_branch[i][k]**2 + px_branch[i][k]**2 + py_branch[i][k]**2 + pz_branch[i][k]**2)
        } for k in range(nParticles[i])]

Gives:

real	0m32.826s
user	0m30.217s
sys	0m3.565s