#!/usr/bin/env python
# coding: utf-8

# In[1]:


import sys
print('hello world', flush=True)
for i in range(3):
    print(i, flush=True)
print('output to stderr', file=sys.stderr, flush=True)
print('some more stdout text', flush=True)


# # Markdown Cell
# 
# $ e^{ \pm i\theta } = \cos \theta \pm i\sin \theta + \beta $
# 
# *It* **really** is!

# In[2]:


this is a syntax error


# In[3]:


from IPython.display import Image
Image('./jupyter.png')


# In[4]:


from IPython.display import Latex
Latex('''The mass-energy equivalence is described by the famous equation
 
$$E=mc^2$$
 
discovered in 1905 by Albert Einstein. 
In natural units ($c$ = 1), the formula expresses the identity
 
\\begin{equation}
E=m
\\end{equation}''')


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