How to smooth lines in a figure in python?
<p>So with the code below I can plot a figure with 3 lines, but they are  angular. Is it possible to smooth the lines? </p>

<pre><code>import matplotlib.pyplot as plt
import pandas as pd

# Dataframe consist of 3 columns
df['year'] = ['2005, 2005, 2005, 2015, 2015, 2015, 2030, 2030, 2030']
df['name'] = ['A', 'B', 'C', 'A', 'B', 'C', 'A', 'B', 'C']
df['weight'] = [80, 65, 88, 65, 60, 70, 60, 55, 65]
fig,ax = plt.subplots()

# plot figure to see how the weight develops through the years
for name in ['A','B','C']:
    ax.plot(df[df.name==name].year,df[df.name==name].weight,label=name)

ax.set_xlabel("year")
ax.set_ylabel("weight")
ax.legend(loc='best')
</code></pre>