[英]how to loop around every word in a line and then every line in a file?
我有像這樣的字典
list1={'ab':10,'ba':20,'def':30}.
現在我的輸入文件包含:
絕對清晰度
ba ab
我已經編碼:
filename=raw_input("enter file:")
f=open(filename,'r')
ff=open(filename+'_value','w')
for word in f.read().split():
s=0
if word in list1:
ff.write(word+'\t'+list1[word]+'\n');
s+=int(list1[word])
else:
ff.write(word+'\n')
ff.write("\n"+"total:%d"%(s)+"\n")
現在,我希望輸出文件包含:
大約10
防御30
合計:4020 20
大約10
合計:30
無法為每一行循環它。 我該怎么辦? 我嘗試了一些使用f.readlines(),f.read()的變體,並嘗試循環一次,然后循環兩次。 但我做對了。
除了立即給出答案外,讓我簡要介紹您的要求:
要讀取整個文件:
f = open('myfile','r')
data = f.read()
要遍歷文件中的每一行:
for line in data:
要遍歷該行中的每個單詞:
for word in line.split():
明智地使用它來獲取想要的東西。
您需要制作2個循環,而不僅僅是一個循環:
filename = raw_input("enter file:")
with open(filename, 'r') as f, open(filename + '_value','w') as ff:
# Read each line sequentially
for line in f.read():
# In each line, read each word
total = 0
for word in line.split():
if word in list1:
ff.write("%s\t%s\n" % (word, list1[word]))
total += int(list1[word])
else:
ff.write(word+'\n')
ff.write("\ntotal: %s\n" % total)
我還清理了一點代碼以使其更具可讀性。 另請參見python“ with”語句的用途是什么? 如果您想了解with
塊
with open("in.txt","r") as f:
with open("out.txt","w") as f1:
for line in f:
words = line.split() # split into list of two words
f1.write("{} {}\n".format((words[0]),list1[words[0]])) # write first word plus value
f1.write("{} {}\n".format((words[1]),list1[words[1]])) # second word plus value
f1.write("Total: {}\n".format((int(list1[words[0]]) + int(list1[words[1]])))) # finally add first and second and get total
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