Python EOFError
The input() function encountered end-of-file (no more data to read).
Explanation
EOFError is raised when the input() function or similar input-reading functions reach the end of the input stream without reading any data. This commonly happens when running scripts in non-interactive environments (like cron jobs, Docker containers, or CI/CD pipelines) that try to read user input. It also occurs when reading from files that have been unexpectedly closed or when piped input is exhausted.
Common Causes
- Running interactive script in non-interactive environment
- stdin not available (Docker, cron, CI)
- Input stream exhausted
- File closed unexpectedly
- Piped input ended
Solution
Remove input() calls from scripts that run in non-interactive environments. Use command-line arguments (argparse) instead of interactive input. Set default values for environments where input isn't available. Wrap input() calls in try-except blocks. For testing, provide input via stdin piping: echo "input" | python script.py. Use environment variables for configuration instead of interactive prompts.
Code Example
# This fails in non-interactive environments
name = input('Enter your name: ') # EOFError in cron/Docker
# Fix: use default value for non-interactive
def get_name():
if sys.stdin.isatty():
return input('Enter your name: ')
return os.environ.get('NAME', 'default')
# Or use try-except
try:
name = input('Enter your name: ')
except EOFError:
name = 'default'
# Better: use argparse for CLI tools
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--name', default='default')
args = parser.parse_args()
name = args.name
# For reading files
try:
line = file.readline()
if not line:
print('End of file')
except EOFError:
print('Unexpected end of file')Error Information
Language
python
Difficulty
Beginner
Views
11
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