How to save matplotlib plot with a custom filename that includes timestamp?-CodePudding

I'm trying to write a program in Python which can save a plot with a filename that includes the timestamp as part of its name with matplotlib, for example, "temperature_vs_time_16-09-23". I tried using an fstring and time.strftime('format', time.time()) but it doesn't seem to be working. Does anyone have an easy work around for this? Thanks.

CodePudding user response：

You can use datetime and join strings as filename

import matplotlib.pyplot as plt
import numpy as np
from datetime import datetime
values = np.random.randint(0,10,100)
now = datetime.now()
today_filename = "temperature_vs_time_" now.strftime("%d-%m-%Y") ".png"
plt.plot(values)
plt.savefig(today_filename)

CodePudding user response：

You can try this way by using pandas to get current datetime, it should work

date = pd.to_datetime('now').strftime("%Y-%m-%d")

### Filename of your choice
filename = 'temp_{name}'.format(name=date)

### Visualize
plt.plot(df['column'].value_counts())

### Save figure
plt.savefig(filename '.jpg', dpi=100)

plt.show()