Fix unstable Python_particle_attr_access CI tests (ECP-WarpX#2766)

* explicitly set the numpy random seed in Python_particle_attr_access tests

* also shrink boundaries in which particles are injected for good measure

* also explicitly set the numpy random seed in Python_restart_runtime_components CI test

Examples/Tests/ParticleDataPython/PICMI_inputs_2d.py

@@ -36,7 +36,6 @@
 ymin = 0
 ymax = 0.03
 
-
 ##########################
 # numerics components
 ##########################
@@ -105,6 +104,9 @@
 # python particle data access
 ##########################
 
+# set numpy random seed so that the particle properties generated
+# below will be reproducible from run to run
+np.random.seed(30025025)
 
 sim.extension.add_real_comp('electrons', 'newPid')
 
@@ -113,9 +115,9 @@
 def add_particles():
 
     nps = 10 * (my_id + 1)
-    x = np.random.rand(nps) * 0.03
+    x = np.linspace(0.005, 0.025, nps)
     y = np.zeros(nps)
-    z = np.random.random(nps) * 0.03
+    z = np.linspace(0.005, 0.025, nps)
     ux = np.random.normal(loc=0, scale=1e3, size=nps)
     uy = np.random.normal(loc=0, scale=1e3, size=nps)
     uz = np.random.normal(loc=0, scale=1e3, size=nps)

Examples/Tests/restart/PICMI_inputs_runtime_component_analyze.py

@@ -111,15 +111,18 @@
 # python particle data access
 ##########################
 
+# set numpy random seed so that the particle properties generated
+# below will be reproducible from run to run
+np.random.seed(30025025)
 
 sim.extension.add_real_comp('electrons', 'newPid')
 
 def add_particles():
 
     nps = 10
-    x = np.random.rand(nps) * 0.03
+    x = np.linspace(0.005, 0.025, nps)
     y = np.zeros(nps)
-    z = np.random.random(nps) * 0.03
+    z = np.linspace(0.005, 0.025, nps)
     ux = np.random.normal(loc=0, scale=1e3, size=nps)
     uy = np.random.normal(loc=0, scale=1e3, size=nps)
     uz = np.random.normal(loc=0, scale=1e3, size=nps)