How to generate word clouds using Python and wordcloud, and what to do if TrueType fonts are not recognized during the operation.
1. Environment Installation#
pip3 install wordcloud
2. Code Demo#
import pandas as pd
from wordcloud import WordCloud
import matplotlib.pyplot as plt
# Read data
def read_data(filename):
df = pd.read_excel(filename)
return df['Keyword'].tolist()
# Analyze data
def analyze_data(keywords):
df = pd.DataFrame(keywords, columns=['Keyword'])
keyword_counts = df['Keyword'].value_counts()
# Generate word cloud
wordcloud = WordCloud(width=800, height=400, font_path='/System/Library/Fonts/Supplemental/Arial.ttf').generate_from_frequencies(keyword_counts)
plt.figure(figsize=(20, 10))
plt.imshow(wordcloud, interpolation='bilinear')
plt.axis('off')
plt.show()
# Main program
def main():
keywords = read_data('keywords.xlsx')
analyze_data(keywords)
if __name__ == '__main__':
main()
This code reads keywords from an Excel file and uses the WordCloud library to generate a word cloud chart. Finally, the Matplotlib library is used to display the chart. The read_data() function reads the keywords from the Excel file, the analyze_data() function analyzes the read keywords and generates the corresponding word cloud chart, and the main() function is the main program entry point, which calls the read_data() and analyze_data() functions to complete the entire process from data reading to word cloud chart generation.
*Excel file format:
3. Font Issue#
I am using a Mac, and when generating the word cloud, I kept getting the error: ValueError: Only supported for TrueType fonts, indicating that only TrueType fonts are supported. However, I have already provided a TrueType font file. In this case, you just need to check if the font file path is correct.
pip install --upgrade pillow
This error may be caused by the version of the Pillow library (PIL). In some versions of the Pillow library, the ImageDraw.textbbox method only supports TrueType fonts and does not support OpenType fonts. Even if you provide a TrueType font file, Pillow may not be able to recognize it correctly.