if word.isalpha():
freq[word] = 1 + freq.get(word, 0)
#for (w,c) in freq.items():
#print (w,c)
print("""
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
xml:space="preserve" style="shape-rendering:geometricPrecision;
text-rendering:geometricPrecision; image-rendering:optimizeQuality;
fill-rule:evenodd; clip-rule:evenodd" viewBox="0 0 2000 1000">""")
string = ""
betweenSpace = 0
currentDepth = 0
for node in freq.breadthfirst():
if freq.depth(node) > 6:
break
else:
if freq.depth(node) == 0 or freq.depth(node) != currentDepth:
x = 2000 / (2**(freq.depth(node) + 1))
betweenSpace = x * 2
currentDepth = freq.depth(node)
else:
x = x + betweenSpace
string += "<circle style='fill:url(#toning);stroke:#010101;stroke-width:1.6871;stroke-miterlimit:10;' cx='"
string += str(x)
string += "' cy='"
y = str((freq.depth(node) + 1) * 20)
string += y
string += "' r='19'></circle><text x='"
string += str(x)
max_word = ''
max_count = 0
for (w, c) in freq.items(): # (key, value) tuples represent (word, count)
if c > max_count:
max_word = w
max_count = c
print('The most frequent word is', max_word)
print('Its number of occurrences is', max_count)
print("""
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" style="shape-rendering:geometricPrecision; text-rendering:geometricPrecision; image-rendering:optimizeQuality; fill-rule:evenodd; clip-rule:evenodd"
viewBox="0 0 2000 1000">
<circle style="fill:url(#toning);stroke:#010101;stroke-width:1.6871;stroke-miterlimit:10;" cx="1000" cy="20" r="19">
</circle>
<text x="1000" y="20" text-anchor="middle" >Root</text>
<circle style="fill:url(#toning);stroke:#010101;stroke-width:1.6871;stroke-miterlimit:10;" cx="500" cy="40" r="19">
</circle>
<text x="500" y="40" text-anchor="middle" >Left</text>
</svg>
""")
# how to get information out of a node
for node in freq.breadthfirst():
print("Node depth:" + str(freq.depth(node)))
print("Node height:" + str(freq.height(node)))
print("Node value:" + str(node.value()))
print("Node key:" + str(node.key()))
print("<br/>")