目錄
函式與檔案
print後不自動換行
from sys import ar**
script,input_file = ar**
def print_all(f):
print(f.read())
def rewind(f):
f.seek(0)
def print_a_line(line_count,f):
print(line_count,f.readline())
current_file = open(input_file)
print("first let's print the whole file:")
print_all(current_file)
print("let's rewind ,kind of like a tape.")
rewind(current_file)
print("let's ptint three lines:")
current_line = 1
print_a_line(current_line,current_file)
current_line = 1+current_line
print_a_line(current_line,current_file)
current_line = 1+current_line
print_a_line(current_line,current_file)
from sys import ar**
script,input_file = ar**
def print_all(f):
print(f.read())
def rewind(f):
f.seek(0)
def print_a_line(line_count,f):
print(line_count,f.readline(),end="")#print新增引數end=「」，不會自動換行了
current_file = open(input_file)
print("first let's print the whole file:")
print_all(current_file)
print("let's rewind ,kind of like a tape.")
rewind(current_file)
print("let's ptint three lines:")
current_line = 1
print_a_line(current_line,current_file)
current_line = 1+current_line
print_a_line(current_line,current_file)
current_line = 1+current_line
print_a_line(current_line,current_file)
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