Getting Started with PyQt [duplicate]
I'm testing out some of the examples in Rapid GUI Programming with Python and Qt, but running into a stumbling block here or where. When I copied to following exercise (verbatim, from the book):
import sys
import time
from PyQt4.QtCore import *
from PyQt4.QtGui import *
app = QApplication(sys.argv)
try:
开发者_JAVA百科 due = QTime.currentTime()
message = "Alert!"
if len(sys.argv) < 2:
raise ValueError
hours, mins = sys.argv[1].split(":")
due = QTime(int(hours), int(mins))
if not due.isValid():
raise ValueError
if len(sys.argv) > 2:
message = " ".join(sys.argv[2:])
except ValueError:
message = "Usage: alert.pyw HH:MM [optional message*]" # 24hr Clock
while QTime.currentTime() < due:
time.sleep(20) # 20 seconds
label = QLabel("<font color=red size=72><b>" + message + "</b></font>")
label.setWindowFlags(Qt.SplashScreen)
label.show()
QTimer.singleShot(60000, app.quit) # 1 minute
app.exec_()
I get the following error:
andy@ASUSix:~/Documents/Programming/Python/PyQt$ from: can't read /var/mail/PyQt4.QtCore
from: can't read /var/mail/PyQt4.QtGui
./alert.pyw: line 6: syntax error near unexpected token `('
./alert.pyw: line 6: `app = QApplication(sys.argv)
What's going wrong here? Is my PATH set up incorrectly?
You probably forgot to add a shebang to your script, to tell your shell to actually run it with the Python interpreter. Try adding
#!/usr/bin/python
as the first line in your script, provided that's where your Python interpreter is installed. You might want to try
which python
in case you're not sure.
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