Add main.py to test jackknife estimator

main.py

+#%%
+# So?
+#from jackknife import get_generator
+#from jackknife import do_jackknife_estimation
+# Oder so?
+#import jackknife as jk
+# Oder doch so?
+import jackknife
+
+#%%
+n = 10
+my_list = [x / n for x in range(0, n + 1)]
+my_generator = jackknife.get_generator(my_list)
+
+#%%
+output = jackknife.do_jackknife_estimation(my_generator, lambda x: 1*x)
+print("{}{}".format("mean               = ", output[0]))
+print("{}{}".format("variance           = ", output[1]))
+print("{}{}".format("standard deviation = ", output[2]))