在Python中,根据字符数轻松地使用空格填充字符串。例如:
输出结果如下:
我希望所有行中的主题和日期都对齐。
print "aaa".ljust(10) + "end"
print "www".ljust(10) + "end"
输出结果如下:
aaa end
www end
这段文字在任何字符大小相等的显示屏上看起来都非常好。但是当我在Tkinter
程序中输出这两个字符串时,它们不会对齐,因为在任何Tkinter
字体中,字符'a'和'w'的长度不同。
我该如何在Tkinter
中对齐字符串?
我的代码:
from Tkinter import *
STANDARD_FONT = ("David",14)
TO = "TO"
SUBJECT = "SUBJECT"
DATE = "DATE"
content = [
{TO:'Frye', SUBJECT:'Water Pipe Replacement Cost', DATE:'July 9'},
{TO:'George', SUBJECT:'Fw: Cell phone reimbursement', DATE:'July 9'},
{TO:'George, Tim', SUBJECT:'Travel', DATE:'July 10'},
{TO:'Sandy, Jim', SUBJECT:'Fw: Welcome to WOW! - News', DATE:'July 10'},
{TO:'Sandy, Jim', SUBJECT:'Re: Present from paulette', DATE:'July 10'},
{TO:'George, Tim, Sandy, Jim', SUBJECT:'Voices Across Alaska: State Budget Priorities', DATE:'July 10'},
{TO:'Frye', SUBJECT:'FW: Confirmation of the Novemberl 5th discussion', DATE:'July 10'},
{TO:'Jim', SUBJECT:'Re: Happy Thanksgiving!', DATE:'July 11'}
]
def makeWindow () :
global nameVar, phoneVar, select
win = Tk()
frame1 = Frame(win)
frame1.pack()
frame2 = Frame(win) # Row of buttons
frame2.pack()
frame3 = Frame(win) # select of names
frame3.pack()
scroll = Scrollbar(frame3, orient=VERTICAL)
select = Listbox(frame3, yscrollcommand=scroll.set, height=17, width=100, font=STANDARD_FONT)
scroll.config (command=select.yview)
scroll.pack(side=RIGHT, fill=Y)
select.pack(side=LEFT, fill=BOTH, expand=1)
return win
def format_mail_str(mail):
to = "To: " + mail[TO]
subject = mail[SUBJECT]
date = mail[DATE]
spacing = " " * 5
return to.ljust(40) + spacing + subject.ljust(30) + spacing + date.ljust(15)
def setSelect () :
select.delete(0,END)
for mail in content:
select.insert (END, format_mail_str(mail))
win = makeWindow()
setSelect ()
win.mainloop()
我希望所有行中的主题和日期都对齐。
Text
字段中,还是在多个堆叠的Entry
小部件中,或者是在Canvas
上? - tobias_k