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Use io.BytesIO instead of io.StringIO in examples #6205

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Mar 26, 2016
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Use io.BytesIO instead of io.StringIO in examples #6205

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c212d86
Use io.BytesIO instead of io.StringIO in examples
mdboom Mar 22, 2016
4f17dbd
Address comments in PR
mdboom Mar 23, 2016
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7 changes: 4 additions & 3 deletions doc/faq/howto_faq.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -661,11 +661,12 @@ or by saving to a file handle::
fig.savefig(sys.stdout)

Here is an example using `Pillow <http://python-imaging.github.io/>`_.
First, the figure is saved to a StringIO object which is then fed to
First, the figure is saved to a BytesIO object which is then fed to
Pillow for further processing::

import StringIO, Image
imgdata = StringIO.StringIO()
from io import BytesIO
from PIL import Image
imgdata = BytesIO()
fig.savefig(imgdata, format='png')
imgdata.seek(0) # rewind the data
im = Image.open(imgdata)
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6 changes: 3 additions & 3 deletions examples/misc/svg_filter_line.py
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Expand Up @@ -51,9 +51,9 @@
ax.set_xlim(0., 1.)
ax.set_ylim(0., 1.)

# save the figure as a string in the svg format.
from io import StringIO
f = StringIO()
# save the figure as a bytes string in the svg format.
from io import BytesIO
f = BytesIO()
plt.savefig(f, format="svg")


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4 changes: 2 additions & 2 deletions examples/misc/svg_filter_pie.py
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Expand Up @@ -42,8 +42,8 @@


# save
from io import StringIO
f = StringIO()
from io import BytesIO
f = BytesIO()
plt.savefig(f, format="svg")

import xml.etree.cElementTree as ET
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4 changes: 2 additions & 2 deletions examples/user_interfaces/svg_histogram.py
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Expand Up @@ -35,7 +35,7 @@
import numpy as np
import matplotlib.pyplot as plt
import xml.etree.ElementTree as ET
from io import StringIO
from io import BytesIO
import json

plt.rcParams['svg.embed_char_paths'] = 'none'
Expand Down Expand Up @@ -76,7 +76,7 @@
t.set_gid('leg_text_%d' % i)

# Save SVG in a fake file object.
f = StringIO()
f = BytesIO()
plt.savefig(f, format="svg")

# Create XML tree from the SVG file.
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4 changes: 2 additions & 2 deletions examples/user_interfaces/svg_tooltip.py
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Expand Up @@ -24,7 +24,7 @@

import matplotlib.pyplot as plt
import xml.etree.ElementTree as ET
from io import StringIO
from io import BytesIO

ET.register_namespace("", "http://www.w3.org/2000/svg")

Expand Down Expand Up @@ -72,7 +72,7 @@
ax.set_ylim(-30, 30)
ax.set_aspect('equal')

f = StringIO()
f = BytesIO()
plt.savefig(f, format="svg")

# --- Add interactivity ---
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