从Linux命令行调用它时,我使用的命令行工具工作正常,但是当我通过Python subprocess
模块调用它时,会出现异常。我看了以前与此相关的文章,但是没有一篇文章讨论它如何在命令行上工作,但在Python中却没有。
这是我得到的回溯示例:
Exception in thread "Thread-1" java.lang.Error: Probable fatal error:No fonts found.
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1236)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1100)
at sun.font.SunFontManager.findOtherDeferredFont(SunFontManager.java:1037)
at sun.font.SunFontManager.findDeferredFont(SunFontManager.java:1054)
at sun.font.SunFontManager.findFont2D(SunFontManager.java:2256)
at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1220)
at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1106)
at sun.font.CompositeFont.doDeferredInitialisation(CompositeFont.java:263)
at sun.font.CompositeFont.getSlotFont(CompositeFont.java:352)
at sun.font.CompositeStrike.getStrikeForSlot(CompositeStrike.java:78)
at sun.font.CompositeStrike.getFontMetrics(CompositeStrike.java:93)
at sun.font.FontDesignMetrics.initMatrixAndMetrics(FontDesignMetrics.java:359)
at sun.font.FontDesignMetrics.<init>(FontDesignMetrics.java:350)
at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:302)
at sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:855)
at uk.ac.babraham.FastQC.Graphs.QualityBoxPlot.paint(QualityBoxPlot.java:88)
at javax.swing.JComponent.print(JComponent.java:1202)
at uk.ac.babraham.FastQC.Modules.AbstractQCModule.writeDefaultImage(AbstractQCModule.java:68)
at uk.ac.babraham.FastQC.Modules.PerBaseQualityScores.makeReport(PerBaseQualityScores.java:199)
at uk.ac.babraham.FastQC.Report.HTMLReportArchive.<init>(HTMLReportArchive.java:131)
at uk.ac.babraham.FastQC.Analysis.OfflineRunner.analysisComplete(OfflineRunner.java:178)
at uk.ac.babraham.FastQC.Analysis.AnalysisRunner.run(AnalysisRunner.java:110)
at java.lang.Thread.run(Thread.java:745)
我这样称呼这个工具:
def runCommand(self, command, directory):
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd=directory)
out,err = process.communicate()
if out:
self.logger.info("Standard output: \n" + out.decode('utf-8') + "\n")
if err:
self.logger.info("Standard error: \n" + err.decode('utf-8') + "\n")
命令与我在命令行上运行它所使用的命令相同。
我检查以确保从命令行调用的Java版本与使用subprocess
调用的Java版本相同。可能是在subprocess
中运行时以某种方式修改了环境,但是如何确保在Java中使用了字体包?
参考方案
这是我用来从python运行fastqc的代码。它使用subprocess.check_call而不是Popen。
def run(fastq_path, output_dir, options=['--extract',]):
"""
Run the fastqc program on a specified fastq file and return the output directory path.
Parameters
----------
fastq_path : str
Path to the fastq file to analyze.
output_dir : str
Directory where output will be written. It will be created if it does not exist.
options : list of str (optional)
Command-line flags and options to fastqc. Default is --extract.
Returns
-------
output_dir : str
The path to the directory containing the detailed output for this fastq file.
It will be a subdirectory of the specified output dir.
"""
utils.mkdir_p(output_dir)
command = "fastqc {} -o {} {}".format(' '.join(options), output_dir, fastq_path)
subprocess.check_call(command, shell=True)
# Fastqc creates a directory derived from the basename
fastq_dir = os.path.basename(fastq_path)
if fastq_dir.endswith(".gz"):
fastq_dir = fastq_dir[0:-3]
if fastq_dir.endswith(".fq"):
fastq_dir = fastq_dir[0:-3]
if fastq_dir.endswith(".fastq"):
fastq_dir = fastq_dir[0:-6]
fastq_dir = fastq_dir + "_fastqc"
# Delete the zip file and keep the uncompressed directory
zip_file = os.path.join(output_dir, fastq_dir + ".zip")
os.remove(zip_file)
output_dir = os.path.join(output_dir, fastq_dir)
return output_dir
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